Gas block drilling jig for use on Original Geissele (Larger) gas blocks with 3/16” pin hole. Has 3/16" ID hardened drill insert. Includes jig, insert, 3/16" Cobalt drill bit and soft point set screw. Verify that you have the 3/16" pin type gas block prior to order, see note below.
NOTE: Geissele currently has two different gas blocks in circulation, this jig fits the original larger block. If you have the new smaller block, you may use our 2AU system 0.750 bore front block and 2AU-DAG drilling arm to drill. This set up will work for both Geissele gas blocks if you use the optional 3/16" bushing for the older style gas block. We have a few more of these 2G jigs in stock and they will no longer be made after these are gone. No returns or exchanges will be accepted on orders after 9/23/18 for these jigs. All Sales final.