The new JK HD Minimalist is a nitride 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 the JK 155 suppressors and any other suppressor with an ASR-compatible mount such as one of the Taper Mounts. Precision machined from heat-treated and black nitride 17-4 stainless steel, the JK HD Minimalist is available in 1/2-28 (For use with .22 Cal & 9mm) and 5/824 (For use with .30cal and .45cal).