this is a pistol that uses a CMMG ar22 bolt carrier and barrel, and sig p322 magazines and mag release.

hardware required:
-1x 8-32 1 1/4" socket head screw (to act as a pivot pin)
-1x 1.5" 1/4 od screw post (to act as a take down pin)
-1x 1" 1/4 od scree post (to attach the pistol grip)
-2x 1.5" 6-32 socket head screws (to reinforce the back end)
-1x 1" 6-32 socket head screw (to reinforce the pistol grip)
-1x cmmg ar22 bolt carrier and barrel
-1x sig p322 mag release
-1x sig p322 magazine (25 round mags must be loaded to 20 rounds to feed reliably)
-1x usgi charging handle OR just print the one provided
-1x usgi AR FCG