Angstadt Arms Angstadt upper receiver pistol 9mm 4.5" m-lok black
FEATURES: Other Features: Complete upper with bcg, works with any 9mm ar lower, barrel threaded 12x36 tpi, 4" m-lok handguard, works with both glock and colt style 9mm dedicated lowers, all atf rules apply, for use on pistols only
Caliber: 9mm NATO
Barrel Length: 4.5"
A2 style flash hider
Mil-spec charging handle
Compatible with both GLOCK and COLT style 9mm dedicated lower receivers