FITS: Vltor ,BCM, Fortis, Midwest Industries, SLR, Radical, Odin, CMMG, PRI, Syrac, Ballistic Advantage, Superlative Arms, Rainier Arms, Spikes, Troy, DD MK12, Seekins, Geissele and YHM with 0.400 spacing using the 0.420 side as noted below.
A note on hole centers: Generally you may use a hole space up to plus or minus 0.020". Example, you could successfully use the 0.420" side on gas blocks from 0.400" to 0.440" centers.
HEX Triple Gas Block Dimple Jig:
The HEX triple dimple jig integrates our 3 standard jigs into one tool. Its machined from 1045 carbon steel hex stock with 0.420", 0.460" and 0.500" center to center on holes and a 0.765" bore. It can also be used on 0.625 pencil barrels with use of adapter sleeve.
1045 carbon steel hex stock
Heat treated - 60 rockwell C
Black zinc coating
Includes pointed and soft point set screws
11/64" drilling holes
The jig includes a 11/64" cobalt stub length drill and a 3/32" hex key.