Let me put in a good word for Gary at GKCustoms in Colorado Springs. He just did two Contender barrels for me, and I snapped a couple shots after he was done with my .357 threading. He was in seventh heaven when I supplied him with Silencerco’s and Libertycan’s thread specs because it allowed him to thread them exactly to spec. He’s been seeing a huge uptick in threading requests as of late, for some reason!
Forgive me because I’m no machinist, but he used a reference bar to align his lathe, then used two spuds, the muzzle end goes in the bore about 1.5” and rests on the lands, the chamber end does the same - he does NOT index on the chamber but rather the lands beyond the chamber. He has assembled quite an array of spuds lately for doing this kind of work.
My mystic is still in jail, but I have shot the Sparrow on the Contender and the O-ring and mating surface keeps the threads absolutely clean!
He has no web page yet, but if anyone is interested, contact:
[email protected]. Gary used to build full house IPSC race guns back in the 90s and compensators have much higher alignment tolerances than suppressors, so the fact that my threading turned out so well didn’t surprise me.
Anyone looking for threading might want to give him whirl. Very friendly, great guy too.
Note in the picture of the muzzle end you can see a “defect” in the threads - this is where one of the front sight mounting holes was, and I told Gary to just leave it be because it wouldn’t affect the Mystic’s mounting whatsoever.
O2
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