MI-ARP300CRM12/ARP556CRM12
.300 AAC Blackout or 5.56 NATO (disc. 2020) cal., GIO, pistol (.300 AAC) or carbine (5.56 NATO cal., disc. 2020) length gas system, 10.5 in. barrel, MI Blast Can muzzle device, low profile gas block, 10 shot mag., uses AR-15 mags., forged a...