MIL-DTL-70599C
position.
3.5.8.2 Forward assist assembly action. Depressing and releasing the forward assist shall
cause progressive movement of the bolt carrier assembly into the battery position.
3.5.9 Compensator alignment. The third (middle) slot must be straight up at top dead
center (TDC). TDC is defined by the front sight post. The alignment may vary as much as one
half the width of the slot either direction.
3.5.10 Front sling swivel.
3.5.10.1 Front sling swivel motion. The front sling swivel shall move between its forward
position, touching the barrel, to its rear position, touching the rail adapter system, without
binding.
3.5.10.2 Front sling swivel retention. The front sling swivel shall not disassemble from
the weapon because it is securely retained to the front sight assembly by the rivet.
3.5.11 Bolt carrier assembly.
3.5.11.1 Key and bolt carrier assembly lock. The bolt carrier and key assembly shall
move through its full range of travel without binding in the upper receiver.
3.5.11.2 Firing pin.
3.5.11.2.1 Firing pin motion. The firing pin shall move from a recessed position, a
position below the bolt face, to a maximum protrusion of 0.036 inches without binding.
3.5.11.2.2 Firing pin retention. The firing pin shall be securely retained in the bolt carrier
assembly by the firing pin retaining pin.
3.5.11.2.3 Firing pin protrusion. The firing pin protrusion shall be a maximum of 0.036
inches and a minimum 0.028 inches.
3.5.11.2.4 Firing pin plating workmanship. The chromium plating of the firing pin shall
be free of nodules, flaking, stripping, anode burns and evidence of etched base steel, except as
specified on the applicable drawing 8448503.
3.5.12 Charging handle retention. When the charging handle is placed in the forward
position it shall engage and lock securely in the upper receiver by the charging handle release.
3.5.13 Bolt assembly.
3.5.13.1 Bolt assembly motion. The bolt assembly shall move through its full range of
travel and lock in the battery position.
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