Sons Of Liberty Gun Works UPPERSTRIPPED M4 Stripped Upper Receiver Black Anodized Aluminum, Fits Mil-Spec AR-15 $142.50
Meta Tactical Llc APEXGFCBK17G5 Apex Carbine Conversion Kit 16" 9mm Luger, Black, Polymer Bullpup Chassis with Adj. Stock, M-Lok Handguard, AR Style Pistol Grip, Muzzle Device, Fits Glock 17 Gen 5 $499.99