background image

13

 

 
 

 

how to change all the parameters that are shown on the display.  As we proceed through the 
explanations, it will become clearer as to how the 6300-M4 actually operates. 
 
Interaction with the 6300-M4 is done through several different screens that are displayed on 
the Remote unit.  All the screens are shown in Figure 3.1.  Of the screens shown in Figure 3.1, 
the Self Test screen is used only at startup, all the Function Select screens are used only a few 
times  during  normal  operation  and  also  when  first  setting  up  the  6300-M4.  The  Calibrate 
screen is used only once a year by the calibration facility.  During normal operation, the two 
screens  that  are  used  the  most  are  the  Main  Operating  screen  (Main  Screen)  and  the  Leak 
Screen.  All the different screens, except the calibration screen, are explained in this section.  
The Calibration screen is explained in section 6. 
 

 
3.2 

MAIN OPERATING SCREEN

 

 
Most of the operation of the 6300-M4 is done in the Main Screen.  All the pertinent parameters 
are  displayed  on  this  screen.    The  screen  is  also  used  to  change  Target  values,  Units,  and 
Modes.  The following sub-sections explain the various uses of the Main Screen. 
 

3.2.1  DISPLAYED PARAMETERS 

 
There  are  11  basic  parameters  of  importance  while  using  the  6300-M4.    Each  of  these 
parameters  is  displayed  on  the  Main  Screen.    Each  parameter  is  explained  below  and 
highlighted in a sample screen. 
 

Parameter 1.

    

Pitot Units:

  Unit of measurement for  displaying the Pitot output.  Normally, 

the Pitot unit used is ‘Knots’ for  displaying airspeed.  Other possible units for displaying the 
Pitot  output  are shown in section 3.2.3, which also explains how to select a particular unit.  
The currently selected Pitot  unit is shown on the first line of the display (as shown below).  
The two values (101.2 and 20.0) that appear below it are in these units. 
 
 

Units:                     knots              Feet/min 

      Feet 

Actual:    M          101.2 

 

  3500  

     1005     M 

Target: 

         20.0 

 

  3000  

           0 

                                                                                                                          
 

Parameter 2.

    

Static Units:

  Unit of measurement for  displaying the Static output.  Normally, 

the Static unit used is ‘Feet’ for  displaying altitude.  Other possible units for displaying the 
Static  output  are shown in section 3.2.3, which also explains how to select a particular unit.  
The currently selected Static  unit is shown on the first line of the display (as shown below).  

Summary of Contents for 6300-M4

Page 1: ...MODEL 6300 M4 Rev A5 USER S MANUAL LAVERSAB INC 505 GILLINGHAM LANE SUGAR LAND TX 77478 PHONE 281 325 8300 FAX 281 325 8399 Email aservice laversab com Document Number 9043 REV A5 Date June 30th 2014 ...

Page 2: ...ng free of charge FOB Houston Texas any such parts proving defective within the period of this warranty but Laversab Inc will not be responsible for transportation charges consequential or incidental damages No liability is assumed by Laversab for damages that are caused by misuse or abuse of the product The warranty of Laversab Inc is not made for products manufactured by others which are illustr...

Page 3: ...n part or in whole without the prior written permission of Laversab Inc DISCLAIMER No representations or warranties are made with respect to the contents of this user s manual Further Laversab Inc reserves the right to revise this manual and to make changes from time to time in the content hereof without obligation to notify any person of such revision ...

Page 4: ... 9043 REV A 10 20 2003 6300 M4 REV A User s Manual 9043 REV A2 03 05 2010 6300 M4 REV A2 User s Manual 9043 REV A3 03 23 2011 6300 M4 REV A3 User s Manual 9043 REV A4 07 22 2011 6300 M4 REV A4 User s Manual 9043 REV A5 06 30 2014 6300 M4 REV A5 User s Manual ...

Page 5: ...URY OR LOSS OF LIFE HENCE THE EQUIPMENT DESCRIBED IN THIS MANUAL SHOULD BE OPERATED ONLY BY PERSONNEL TRAINED IN PROCEDURES THAT WILL ASSURE SAFETY TO THEMSELVES TO OTHERS AND TO THE EQUIPMENT BEFORE PERFORMING ANY MAINTENANCE TURN THE POWER OFF AND DISCONNECT THE POWER CORD FROM THE POWER SOURCE ALWAYS USE A 3 PIN GROUNDED OUTLET AS YOUR AC POWER SOURCE ...

Page 6: ... Self Test Screen 27 3 5 Function Select Screen 29 3 5 1 Function 1 View Limits 29 3 5 2 Function 2 Set Limits 30 3 5 3 Function 3 Set Knots Rate 32 3 5 4 Function 4 View and Execute Profiles 32 3 5 5 Function 5 Setup Profiles 33 3 5 6 Function 6 Height Correction 33 3 5 7 Function 7 Set Ground 34 3 5 8 Function 8 Go To Ground 34 Section 4 Profiles 35 4 1 What is a Profile 35 4 2 Creating a Profil...

Page 7: ... contd Section 7 Maintenance 51 Section 8 Communication Interface 52 8 1 RS232 Serial Interface 52 8 2 Communication Syntax 52 Appendix A Error Codes 55 Appendix B Specifications 56 Appendix C Repair and Return Policies 57 ...

Page 8: ...also allows the user to control EPR on the pitot output The model 6300 M4 features programmable limits on altitude airspeed mach number and climb rate These limits are checked during data entry and thereby prohibit entry of erroneous target values These limits are also checked continuously during operation and if any of these is exceeded the unit automatically takes abortive action The user has th...

Page 9: ...s located inside the fuse holder The fuse is a time delay fuse with a rating of 2 0 amps 250 Volts 3 AC On Off switch This toggle switch connects or disconnects AC power between the AC INPUT connector and the 6300 M4 Even when this switch is ON the 6300 M4 becomes operational only after the On Off switch located on the right side of the Remote Unit is turned ON Push in to turn ON 4 Remote Unit con...

Page 10: ...3 Figure 2 1 A ...

Page 11: ...4 Figure 2 1 b ...

Page 12: ...h a hose to the Static port on the aircraft The hose must be connected after performing the Self Test on the 6300 M4 The hose once connected must not be disconnected while the aircraft Static system is not at Ground level An unused port must remain closed Caution Do not connect the Static hose to the Static port before performing the Self Test Caution Do not disconnect the Static hose from the Sta...

Page 13: ...This valve is a positive shut off valve Opening this valve slowly will vent the Static output of the 6300 M4 to ambient pressure While venting care must be taken to ensure that the maximum climb rate of the aircraft connected to the tester is not exceeded Also the Pitot Vent may need to be used to maintain the airspeed within limits of the indicator on the aircraft Caution The Static Vent is NOT c...

Page 14: ...7 Figure 2 2 ...

Page 15: ...8 Figure 2 3 ...

Page 16: ...anges made through the Remote unit After the changes have been ENTER ed they will flash on the screen until executed by the GO key This allows for simultaneous execution of several changes in target values modes units etc The CANCEL key has multiple purposes It is used to abort all changes that are flashing on the screen It is also used to exit out of target value entry unit selection and mode sel...

Page 17: ...lay To exit from this selection mode press CANCEL To move between the choices use the arrow keys There are nine Pt units in all The cursor location is indicated by the blinking unit mnemonic Once the cursor is on the desired units press ENTER to select that unit The Ps UNITS key brings up the choices for Ps units onto the 4th line of the display Use CANCEL to exit this unit selection mode Use the ...

Page 18: ...are open to ambient Close Pitot and Static Vent valves Step 4 Connect the power cable to the AC INPUT connector on the main unit and connect the far end of the power cable to an AC supply Step 5 On the Main unit turn the AC On Off switch ON On the Remote unit turn the ON OFF switch ON The 6300 M4 will turn ON and the Remote unit will turn ON The display will briefly show the sign on screen and the...

Page 19: ...unction Select Screens 2 1 View Limits 2 Password Change Limits 3 Change knots rate 4 Execute profile Return to Main 5 Setup Profile 6 Height Correction 7 Set Ground 8 Go to Ground Next Screen Password Calibration Next Screen Self Test Self Test Progress Figure 3 1 ...

Page 20: ...n is also used to change Target values Units and Modes The following sub sections explain the various uses of the Main Screen 3 2 1 DISPLAYED PARAMETERS There are 11 basic parameters of importance while using the 6300 M4 Each of these parameters is displayed on the Main Screen Each parameter is explained below and highlighted in a sample screen Parameter 1 Pitot Units Unit of measurement for displ...

Page 21: ... line of the display as shown below The two values 3500 and 3000 that appear below it are in these units Units knots Feet min Feet Actual M 101 2 3500 1005 M Target 20 0 3000 0 Parameter 4 Pitot Actual value This is the current pressure measured at the Pitot output displayed in the current units In the sample screen shown below the current pressure at the Pitot output is 101 2 knots This value is ...

Page 22: ...n the Control mode This is explained later in this section How to change the Pitot Target value is explained in section 3 2 2 Units knots Feet min Feet Actual M 101 2 3500 1005 M Target 20 0 3000 0 Parameter 8 Static Target value This is the value that you command the 6300 M4 to achieve on the Static output In the sample screen below the 6300 M4 has been commanded to achieve a pressure of 0 Feet o...

Page 23: ... the 6300 M4 that is used to change the pressure at the Pitot output is pneumatically isolated from the Pitot output In the Measure mode the Pitot Target value is meaningless since the 6300 M4 is not trying to achieve any specific target value The Leak mode is pneumatically identical to the Measure mode When either Pitot or Static output is in Leak mode the screen changes from the Main Operating s...

Page 24: ...n Operating screen to the Leak screen The Leak screen is detailed in section 3 3 When the Static output is in the Control mode the 6300 M4 is actually attempting to achieve the Static Target value The Static control valve inside the 6300 M4 is now connected to the Static output and is actually increasing or decreasing the pressure to achieve and maintain the Target value For an explanation of how ...

Page 25: ...t exceeds limits Profile Execution When a profile is being executed the 4th line of the display will indicate the profile number and the point in the profile A sample screen is shown below where point number 12 of profile number 3 is being executed Notice that this sample screen shows some of the values to be different from our previous sample screens The essence of using profiles is that all the ...

Page 26: ...key entry and it will beep for a longer time period if extra invalid digits are entered It is not necessary to enter the decimal point and the digit after the decimal point if that digit is 0 That is if you want to enter the number 200 0 you may enter just 200 and leave out the And the 0 After entering 200 the display will appear as shown below Units knots Feet min Feet Actual M 101 2 3500 1005 M ...

Page 27: ...ll try to achieve this new target value ONLY IF the Pitot output is in the CONTROL mode Therefore it is desired that both Pitot and Static values be entered so that both are blinking before the GO key is pressed Static target value For entering Ps or altitude target values press the Ps ALTITUDE key and then follow the same process as described above Climb target value For entering Ps rate or CLIMB...

Page 28: ...s are knots Mach Pt inHg Qc inHg Pt mbar Qc mbar miles per hour mph kilometers per hour kmph and Engine pressure ratio EPR EPR is defined as the ratio of Pt to Ps and is unit less Any of these units can be selected by pressing the Pt units key The choices will appear on line 4 of the display four at a time The cursor is placed under the first choice The arrow keys can be used to move the cursor Th...

Page 29: ...d mbar Psmb When a particular unit is selected the units for climb automatically changes to selected units minute Any of these units can be selected by pressing the Ps Units key Line 4 of the display will show all four units with the cursor under Feet The arrow keys can be used to move the cursor The UP ARROW key moves the cursor left the DOWN ARROW key moves the cursor right The sample screen bel...

Page 30: ...re mode The UP ARROW key can be used for moving the cursor left and the DOWN ARROW key can be used to move the cursor right The cursor wraps around the selections that is moving the cursor left past MEAS wraps it around to CTRL The sample screen below shows the three mode choices displayed on line 4 of the display with the cursor under MEAS Units knots Feet min Feet Actual M 101 2 3500 1005 M Targ...

Page 31: ... Feet Actual M 101 2 3500 1005 M Target 20 0 3000 0 Ps mode MEAS LEAK CTRL Move the cursor to the desired mode and then press ENTER The selected mode is displayed on the screen and blinks until the GO key is pressed The new mode will not become effective until the GO key is pressed The sample screen below shows the selected Static mode as LEAK Notice that the L on the right in line 2 is blinking U...

Page 32: ...e the Actual values appear on the Main Screen Following the Equalization process only when the actual value on the Static output is less than 2000 feet from Ground and the Pitot output is less than 150 knots the 6300 M4 will automatically inject a small vacuum on the Static output and a small pressure on the Pitot output This is done to determine the volume of the Pitot and Static system on the ai...

Page 33: ...t is leaking For the Static leak check this number is updated every 0 25 seconds and shows 0 for leaks less than 20 ft min For the Pitot leak check this number is updated every 3 seconds f Per min leak rate This is the amount the output has leaked in the past full minute It is updated at the end of every minute on the timer Until the first minute has elapsed it shows WAIT While in the Static Leak ...

Page 34: ...de keeping the Pitot output in Control mode Pressing the CANCEL key allows you to exit from the Leak Screen back to the Main Operating Screen If the mode prior to entering the Leak mode was Control then the 6300 M4 will revert back to Control mode on exiting the Leak Screen 3 4 SELF TEST SCREEN As part of the start up procedure it is recommended that a Self Test be performed on the 6300 M4 Before ...

Page 35: ...m 4 Pt pressure measurement system 5 Pressure and Vacuum pump assembly 6 Ps pressure control system 7 Pt pressure control system To start the Self Test please make sure that the Pitot and Static outputs are open to ambient and then press GO The status of each test will be displayed on the screen as shown below ROM OK RAM OK Ps measurement system OK Pt measurement system OK After the pump section t...

Page 36: ... to select functions 4 through 8 press the Down Arrow key on the keypad to move to the screen shown below Select function UP ARROW for functions 1 to 3 4 Execute profile 5 Set profiles 6 Height Correction 7 Set Ground 8 Go to Ground Once in the correct screen select a number to go to the desired function An explanation of each of the functions is given below 3 5 1 FUNCTION 1 VIEW LIMITS The 6300 M...

Page 37: ...shown below SET LIMITS Please enter password The correct password will take you into the Set Limits screen shown below SET LIMITS 1 max knots 500 0 4 max feet 50000 2 min knots 200 0 5 min feet 2000 3 max mach 1 000 6 max ft min 6000 There are six limit values that can be set These limits are checked when a Target value is entered If the target value exceeds any of the limits an error is generated...

Page 38: ...tolerate The maximum value is 80 000 and the minimum is 0 A typical setting for this limit is 50 000 5 Min Feet This limit is usually set to the minimum altitude that the aircraft instruments can tolerate It is usually a negative number The maximum value for this limit is 80 000 and the minimum is 16 000 A typical setting for this limit is 2000 6 Max Ft min This limit is usually set to the maximum...

Page 39: ... 0 knots min 3 5 4 FUNCTION 4 VIEW EXECUTE PROFILES To execute a profile press Function Select and then press 4 This will bring you back into the Main Screen as shown below You will need to enter the profile number that you want to execute A full explanation of profiles is given in Section 4 Units knots Feet min Feet Actual M 101 2 3500 1005 M Target 20 0 3000 0 ENTER PROFILE NUMBER Assuming you e...

Page 40: ...ress the ENTER key after the last point in the profile the Main screen will revert back to its original setting prior to invoking Function 4 At any time to exit out of the profile viewing or execution function press CANCEL and the screen will revert back to the last executed point 3 5 5 FUNCTION 5 SETUP PROFILES This function is used to load profiles into the 6300 M4 from a PC A full explanation o...

Page 41: ... GO to Set Ground or press CANCEL to exit 3 5 8 FUNCTION 8 GO TO GROUND The Go To Ground function is used to bring the aircraft back down to Ground The target altitude is set to the value memorized in the Set Ground function and the target airspeed is set to 20 knots and the 6300 M4 ramps towards these targets Once these targets have been achieved you must put the 6300 M4 into Measure mode on both...

Page 42: ...e also part of the profile that is created in Excel A typical profile named Sample is shown below as it would appear in Excel A B C D E F G 1 Profile 2 Sample 3 0 3 knots Control 100 0 Feet Control 0 6000 4 knots Control 200 0 Feet Control 0 6000 5 knots Leak 200 0 Feet Control 0 6000 6 knots Control 100 0 Feet Control 1000 6000 7 knots Control 200 0 Feet Control 5000 6000 8 knots Control 300 0 Fe...

Page 43: ...lue G Rate target value In the sample profile Row 3 which is the first point in the profile tells the 6300 M4 to go in Control mode to 100 knots on the Pitot side and in Control mode to 0 feet at 6000 feet min on the Static side Row 4 point 2 makes the 6300 M4 go to 200 knots and 0 feet at 6000 ft min Row 5 point 3 puts the Pitot side into Leak mode while still keeping Static in Control at 0 feet ...

Page 44: ...ct the cells in the unused rows up to row 50 and delete them shifting the cells up DO NOT delete rows 51 52 and 53 7 Format the cells with values so that they show the correct number of digits after the decimal point For instance knots values have 1 digit after the decimal Mach values have 3 digits after the decimal Format the cell just like a regular Excel cell with a number The following table l...

Page 45: ...d the unit will automatically control this without any damage to the aircraft instruments 10 Now that the profile is complete save the profile as an Excel file xls file using the name of the profile as the filename Then save it again using the Save As command but this time change the file type using the Save as type drop down selection to Text Tab delimited Use the profile name as the filename aga...

Page 46: ...ms from the desktop select Accessories select Communications select Hyperterminal The 6300 M4 icon should appear If it does not appear then you will need to repeat steps 1 and 2 above 4 4 DOWNLOADING PROFILES 1 Connect the one to one RS232 cable to the RS232 port on the 6300 M4 You will need to remove the access panel for this Connect the other end of this cable to the COM1 port on your PC 2 Turn ...

Page 47: ...e Main screen a profile number is required to identify the profile This number is x y where x is the profile number and y is the point number within that profile Since a particular point can be specified the user can start a profile at any point not necessarily at point 1 x can have a value between 1 and 20 and y can have a value between 1 and 50 When a profile number is entered using the ENTER ke...

Page 48: ...leak screen The 6300 M4 returns to the main screen where the user must press ENTER to invoke the next profile point 7 When the last point in the profile is executed pressing ENTER will cause line 4 of the display to be cleared This will be the only indication that the profile has been completed 8 Each profile can have up to 50 points There can be 20 profiles resident in the 6300 M4 at any one time...

Page 49: ...l mode 7 If Pitot has a significant leak more than 5 knots min then first try and find the leak while the 6300 M4 is in the Leak screen If you lose all airspeed while searching for the leak cancel out of the Leak screen and go back to Step 6 and continue to search for the leak If you need to disconnect ANY hoses on the aircraft or between the 6300 M4 and the aircraft then a Go To Ground b Put both...

Page 50: ... and from the 6300 M4 During your test procedure if you lose power the 6300 M4 will maintain the pressure When power comes back on the 6300 M4 and the aircraft will be at the same pressure as before except for pressure lost due to leaks in the system If the 6300 M4 behaves erratically for whatever reason turn OFF the 6300 M4 using the ON OFF switch on the Remote unit Turn the unit back ON after 30...

Page 51: ...not yet been found then CANCEL out of Leak Screen allow Pitot to recharge to 200 knots then change Pitot back into Leak Mode and continue searching for the leak e When Pitot is Leak tight CANCEL out of Leak Screen and proceed to step 3 4 3 4 Static Leak check a Airspeed at 200 knots Altitude Target 3000 feet above Ground GO b Setup Static Mode Leak L flashing wait for Static to stabilize at target...

Page 52: ...e ideal hoses to use are Teflon or Teflon coated hoses because they have a very low absorption and out gas coefficient Stainless steel hoses may also be used If the wrong type of hoses are used then the typical results obtained will show that the error increases as the pressure increases Also it is very unlikely that the repeatability of the indicated pressure will be less than 0 002 inHg at 100 i...

Page 53: ...inHg of the 6300 M4 This is the first of your Before calibration adjustment reading It will indicate the zero drift since the previous calibration Note If your Standard cannot generate 1 000 inHg abs the lowest possible pressure below 4 000 inHg abs will be acceptable Step 4 Generate a pressure of 38 000 inHg absolute allow the pressure to stabilize for 2 minutes and take the reading on the Static...

Page 54: ...rated pressure Step 8 On the keypad of the remote unit press PREV SCREEN The display will return to the Main Screen If you press CANCEL the calibration adjustment will become void Step 9 Turn the 6300 M4 OFF wait 30 seconds and then turn it back ON The calibration adjustment is now complete for the Static port Step 10 Verify the calibration by generating pressures in approximately 10 increments an...

Page 55: ... verify the accuracy of the 6300 M4 please skip to Step 10 Step 5 To make a calibration adjustment for the Pitot port on the 6300 M4 move to the the CALIBRATION screen using the NEXT SCREEN key and enter the password The calibration screen appears as follows CALIBRATION Pt inHg Ps inHg Vacuum 1 ________ 3 ________ F S 2 ________ 4 ________ Step 6 Ensure that the pressure generated by the Standard ...

Page 56: ...e display will return to the Main Screen If you press CANCEL the calibration adjustment will become void Step 9 Turn the 6300 M4 OFF wait 30 seconds and then turn it back ON The calibration adjustment is now complete for the Pitot port Step 10 Verify the calibration by generating pressures in approximately 10 increments and noting the 6300 M4 Pitot port PtinHg readings Your calibration sheet will ...

Page 57: ... 005 100 000 0 005 _______________________________________________________________________ VERIFICATION RESULTS STATIC PRESSURE Ps PITOT PRESSURE Pt APPLIED DISPLAYED APPLIED DISPLAYED inHg inHg inHg inHg 1 000 1 000 1 000 1 000 4 000 4 000 10 000 9 999 8 000 8 000 20 000 19 999 12 000 12 000 30 000 30 000 15 000 15 000 40 000 40 000 19 000 19 001 50 000 50 000 23 000 23 001 60 000 60 000 27 000 2...

Page 58: ...ION 7 MAINTENANCE Scheduled maintenance of the 6300 M4 includes calibration once a year The calibration procedure is described in Section 6 Apart from this there are no other scheduled maintenance requirements ...

Page 59: ...baud The pin out of the interface is as follows Pin 2 Transmit TX Pin 3 Receive RX Pin 5 Signal ground GND The baud rate parity bits per byte and number of stop bits cannot be altered and is set to 9600 No parity 8 bits and 1 stop bit respectively 8 2 COMMUNICATION SYNTAX All commands to the 6300 M4 are two letter commands Some commands are used both to read and write data Others are used only to ...

Page 60: ... PJ n W Jog up n 0 or down n 1 Pt target RJ n W Jog up n 0 or down n 1 rate target SJ n W Jog up n 0 or down n 1 Ps target PU n R W Read Set Pt units as per following n units 1 knots 2 mach 3 Pt inHg 4 Qc inHg 5 Pt mb 6 Qc mb 7 mph 8 kmph 9 EPR SU n R W Read set Ps units as follows n units 1 Feet 2 Ps inHg 3 meters 4 Ps mb PM n R W Read Set Pt mode to Measure 1 Leak 2 control 3 SM n R W Read set P...

Page 61: ...point GO W Command to execute current settings CN W Command to cancel current settings IE n R W Read set IEEE address C1 n R W Read set Pt vacuum calibration point C2 n R W Read set Pt fullscale calibration point C3 n R W Read set Ps vacuum cal point C4 n R W Read set Ps fullscale calibration point CC W Activate new calibration points after new values have is executed SF 0 R Read the status of the...

Page 62: ...ROR CODES DESCRIPTION 1 Pressure exceeded 110 FS on Pt output 2 Pressure exceeded 110 FS on Ps output 3 Pt target value exceeds Qc limits 4 Pt target value exceeds mach limit 5 Ps rate target exceeds climb limit 6 Ps target exceeds altitude limits 7 Pt actual value exceeds Qc limit 8 Pt actual value exceeds Mach limit 9 Ps actual value exceeds altitude limits 10 Unused 11 Profile error 12 Ps EQZN ...

Page 63: ...ge 0 3 to 100 inHg resolution 0 001 inHg accuracy 0 005 inHg Airspeed function range 0 to 1100 knots resolution 0 1 knots accuracy 2 4 knots 20 knots 1 0 knots 50 knots 0 5 knots above 100 knots Mach function range 0 0 to 5 0 Mach resolution 0 001 Mach accuracy 0 001 above 0 2 Mach EPR function range 0 to 199 resolution 0 001 accuracy 0 002 typ Power requirement 90 260 VAC 47 440 Hz 150 VA Interfa...

Page 64: ...lease call the customer service department at 281 325 8300 or fax 281 325 8399 or e mail service laversab com Please include a description of the problem that has been identified when returning defective equipment Ship equipment to LAVERSAB INC 505 GILLINGHAM LANE SUGAR LAND TX 77478 U S A Note Please pack the 6300 M4 in a carton prior to shipping Do not ship without proper packing Laversab Inc wi...

Reviews: