BT BT-4, User Manual

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Rear Notch Sight Removal/Relocation
The rear notch sight may be removed or may be relocated along the upper picatinny rail
as needed. To remove or adjust location:
Note:
If relocating make sure marker is pointed in a safe direction, barrel blocking
device is installed and safety is set to safe.
1. Using a 1/8
"
hex wrench loosen the rear sight retaining screw.
2. Slide rear sight to preferred location or remove if so desired.
3. Reverse process to replace rear sight.
Slide Away Elbow Removal/Relocation
The Slide Away TM Elbow may be removed or may be relocated along the upper picatin-
ny rail as needed (such as when required to insert a pull through squeegee). To remove
or adjust location:
Note:
If relocating make sure marker is pointed in a safe direction, barrel blocking
device is installed and safety is set to safe.
1. Press and hold the retention button located on the name plate side of the
Slide Away TM Elbow.
2. Move the Slide Away TM Elbow to preferred location or remove if desired.
3. Reverse process to replace Slide Away TM Elbow.
Note:
Spring loaded retention button must line up in a gap on the picatinny rail.
Trigger Frame Removal
1. Remove the two grip retention screws from the pistol grip. Note: If the acorn shoul-
der nuts located in the pistol grip do not fall out after the screws are removed, then
press them out with a small hex wrench or screwdriver.
Accessing Internal Components
1. Remove the Cocking Handle Cover (rubber bonnet).
2. Lay on a flat surface with the name plate facing up.
3. Remove the four upper receiver retention screws.
Note:
The retention screw located below the cocking handle slot is longer then the rest.
4. Lift name plate receiver half away from other receiver half.
End Cap
CAUTION: May be under spring tension.
1. Carefully remove rear plug, spring guide, bumper o-ring and spring.
Hammer, Cocking Handle and Connecting Rod Removal
1. Rotate Hammer counter-clockwise.
2. Remove Connecting Rod.
3. Remove Cocking Handle.
4. Slide Hammer rearward and remove.
Barrel Adapter, Ball Retainer and Bolt Removal
1. Lift away Barrel Adapter (and barrel if still installed).
2. Lift out Ball Retainer.
3. Slide Bolt forward and remove.
Disassembly beyond this point should only be done by trained personnel.
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