B&T APC9

[JoshNC]

Relevant 922(r) parts for the APC9 (my educated opinion....could be wrong)

(1) Receiver, which includes integral fore end.
(2) Barrel
(3) trunnion
(4) Muzzle attachment (naked 3-lug, so not an issue unless you attach an imported muzzle device)
(5) Bolts
(6) Operating rods (could this be the cocking handle? Maybe, will count it as such to be safe)
(7) Trigger housing, which includes integral pistol grip.
(8) Trigger
(9) Hammer
(10) Sear
(11) Disconnector
(12) Buttstock
(13) Magazine body
(14) Follower
(15) Floor plate

So that's 5 US parts if you plan to use a muzzle device or 4 without. Add a US FCG and either don't use a muzzle device or use a US muzzle device.