APF Carbine 5.56 NATO/.223 Rem. Complete Upper Receiver 16" Barrel 13.5" M-Lok Handguard

Start your next carbine AR-15 build with Alex Pro Firearms! APF is headquartered right here in Alexandria, Minnesota, just about two hours north of The Guide. Point being, we know the folks at APF. We know their firearms are all designed and built in-house-which means they can deliver outstanding quality at an equally outstanding price. The APF Carbine Upper features a 4140 steel barrel topped with an A2 flash hider, as well as a 13.5" M-Lok handguard for accessories. It comes complete with a mi