Note

Some ribbed type barrel assemblies may have a locking tab washer installed at the muzzle brake.

If disassembling non-ribbed type barrel assembly, perform steps a and b. If disassembling ribbed type barrel assembly without locking tab washer, perform steps c through f.

If disassembling ribbed type barrel assembly with a locking tab washer, perform steps g through l.

2. REMOVE MUZZLE BRAKE.

a. Remove cotter pin (2) from muzzle brake (3). Discard cotter pin.

b. Unscrew and remove muzzle brake (3) from 25-mm barrel (4).

NON-RIBBED (ROUND) BARREL ASSEMBLY

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