Quick view Alex Pro Firearms Apf Guardian 556 Nato 16" 30rd Blk $748.00 Alex Pro Firearms Guardian, Semi-automatic Rifle, Ar, 556 Nato/223 Remington, 16" 4150 Barrel, 15" Mlok Handguard, Cerakote Finish, Black, Polymer Grip, Apf M4 Stock, 1 Magazine, 30 Rounds Ri282Model: GuardianProduct Type: ARFinish/Color:... Compare Add to Cart