Standard Super Gas Block - The bore of the SGB is machined to closely fit around .750” diameter mounting bosses found on most M4 Carbines and AR-15 rifles
Precision investment cast from 17-4 precipitation hardening stainless steel, the gas block provides corrosion resistance and strength to withstand thousands of rounds and never let you down. The included instructions cover the standard set screw installation method, as well as Geissele's own "Bombproof Installation". The bombproof installation uses an included 3/16" pin to lock the gas block in place on the barrel so that it will never slide or twist under any operating conditions.
Part Number: 05-807