2AUMK4 Universal Gas Block Drilling Jig

Initially 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 Delrin plastic body with and aluminum drilling arm. The drilling arm comes with a #31 and a 5/32" drill busing on each end to provide options for either size pin. 5/32" is the standard pin for the Geissele gas block. #31 provides a base hole to ream to fit 1/8" diameter coiled roll pins, 1/8" dowel pins or 2/0 taper pins.

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)