Figure Barrel and receiver group M carbine

Carbine Receiver Modification

Bullet ramp where the angular surface intersects the vertical should be smoothly rounded. 6 Inspect receiver for looseness with barrel, deformation, rust and burrs. If receiver is disassembled from barrel, inspect for worn or crossed threads in barrel aperture DEPOT MAINTENANCE ONLY . 7 Inspect bolt guideway and locking shoulders for wear, burrs, cracks, and foreign matter. Inspect receiver retaining lug on rear end Figs. 78 and 104 for wear, burrs, and looseness with recoil plate when...