Quick view PTR Industries PTR 9KT BR 9mm Luger 30+1 5.16" Black Nitride 3-Lug Threaded Barrel, M-LOK Handguard, Black Nitride Aluminum Picatinny Rail Receiver, Brace, Black Polymer Grip $2,320.92 $1,899.00 The 9KT 9mm Pistol semi-automatic operation, powered by a roller-delayed blowback system, is primed for an optional NFA-registered auto sear pack, elevating its functionality. featuring a 5.16" nitride heat-treated barrel, designed with a 3-lug and... Compare Add to Cart