Geissele Super Gas Block with Nitride Coating
The Geissele Super Gas Block with Nitride coating – The bore of the SGB is machined to closely fit around .750” diameter mounting bosses found on most M4 Carbines and AR-15 rifles.
Geissele Automatics Super Gas Block, Nitride Processed 05-231n
Model: Super Gas Block
Product Type: Gas Block
Description: Nitride Processed