Griffin Armament, ATM, Micro Carry Compensator, Fits Glock 17 The Griffin Armament ATM barrels are machined from high quality 416R Chromium Stainless Steel using equipment and machines which very strict tolerances providing you with exceptional match performance. The barrel features a 1:10" twist rate, broach cut rifling and SAAMI spec chambers. Additionally the threaded end features a standard 1/2x28 thread pitch perfect for suppressors, compensators, or any number of other muzzle accessories. Finally the barrel is finished with a black nitride finish which will resist surface wear, corrosion and and increased surface hardness. So what are you waiting for install a Griffin Armament ATM Threaded drop in replacement barrel in your Glock today. Griffin Armament ATM Barrel (Matte Black) Specifications and Features: Griffin Armament GAG17G4TB Drop In Threaded Replacement Barrel 9mm Luger Threaded 1/2x28 1:10" Twist Rate Target Crown Muzzle Honed/Polished Chambers Broach Cut Rifling SAAMI-Spec Chamber 416R Pre-Hardened Chromium Stainless Steel Black Nitride Finish Includes: Micro Carry Comp (For a Limited Time)
