RA27 SERVICE
FRONT END
17. While holding the Pawls, slide the
Retention Collar over the Barrel.
Align the Collar so the side notch
is aligned with the top notch in
the housing. Then slide over the
thread area. Once fully
positioned over the threads, turn
the collar 90 degrees so the
notches align on the side
18. Retention Collar is fully installed.
Note notches on the side.
19. Install Fastener Guide assembly.
Position Fastener Guide over
Barrel. Apply slight pressure to
the top side of the fastener guide
while threading the knurled collar.
It helps to firmly push the
Fastener Guide onto the Barrel
before threading. This will help
seat the Buffer into the Barrel and
allow engagement of the first
thread.
20. As you are tightening the knurled
collar on the muzzle, you should
feel the part begin to tighten
against the rubber O-ring inside
the collar. If the muzzle is
properly installed, the shroud
should click when turned or
indexed.
21. Should the tool use a Magazine
instead of the Fastener Guide,
the Magazine is installed in the
same way.
