RA27 SERVICE
FRONT END
10. A round, wire tube brush is used
to clean the inner surfaces. The
looped handle end of the brush
can be removed and chucked
into a drill to speed up cleaning of
the inner surfaces; i.e. inside of
the Barrel, inside of the Receiver,
Fastener Guide, Power Adjust
Hole, etc.
11. Clean the Load Chamber with a
wire brush. After cleaning,
should the barrel stick closed on
the first shot, it may be necessary
to polish the load chamber with a
polishing bob and an extra
smooth/fine lapping paste.
12. To reassemble, place the Piston
into the Barrel. Piston should be
pushed all the way to the back of
the Barrel.
13. Insert the Buffer into the end of
the Fastener Guide as shown.
Push into place until the rubber
lip at the front of the Buffer
engages into the slot inside the
Fastener Guide
14. Place the Barrel Spring over the
end of the Barrel
15. Note the slot in the top of the
Barrel. This should align with the
top of the Housing. This slot
allows the Barrel to go in one
way.
16. Be sure the Pawls are open and
insert Barrel back into tool
housing. Once fully inserted,
push the Pawls into place. Hold
the two pawls in the closed
position until the retention collar
is installed.
