If you re looking for the lightest, smallest, most cost-effective muzzle device to allow quick attach functionality across all of your ASR-compatible silencers, then look no further than the new JK HD Minimalist! This nitrided 17-4 stainless steel muzzle device weighs just 2.2 ounces and is a scant 1.0 inch long. It provides secure, rapid attachment and removal of your JK 155 suppressors and any other suppressor with an ASR-compatible mount such as one of our Taper Mounts. Product Features Wrench flats at the front as well as on the rear ensure easy installation and removal of the JK HD Minimalist. A front taper protects the threads from carbon fouling and provides for a secure, precise mating surface for your silencer. The JK HD Minimalist muzzle device is everything you need and nothing you don t! It s the perfect choice for outfitting a safe full of rifles to allow for rapidly sharing a suppressor(s) across multiple guns. Product Specifications Recommended torque spec: 35ft/lbs Material: Heat Treated 17-4 Stainless Steel Coating: Black Nitride Weight: 2.2 oz OAL: 1"