2AUMK4 Universal Gas Block Drilling Jig Geissele

This is a made to order item. Please allow 7-10 days to ship.

This is the latest iteration of a universal gas block pinning jig. It is designed to work with any gas block using #10 set screws. The jig includes two 1" long 10-32 set screws and utilizes a slotted steel body with and steel fabricated  drilling arm. The drilling arm comes with a 5/32  drill bushing for use on Geissele gas blocks

This jig will work on any gas block using a #10 set screw, including all standard gas block sizes (0.625, 0.750, 0.875, 0.938)

Includes Geissele drilling arm, 5/32" drill and 1/8" and 3/32" hex key