BCM BFH 11.5-inch Pistol on an Aero M4E1 Lower

A short AR pistol built on a BCM BFH 11.5-inch upper with an MCMR-10 rail and a BCM bolt carrier, on an Aero Precision M4E1 lower. A Geissele Super Charging Handle, a Vortex Crossfire red dot with Magpul back-up irons, a Magpul K2 grip, handstop and rail covers and an SB Tactical SBA5 brace finish it, with an SBR stamp and a suppressor planned.