I was at the range today with my MKIII shooting federal bulk ammo. All was well and then I experienced one incidence of double firing on a single trigger pull. This pistol has been enhanced with VQ trigger & sear.... I have probably put 3000 rounds through her since the trigger job and this is the 1st time I've experience doubling
My gunsmith did the trigger work.... can this sort of thing be a one off with low risk of safety implications or do I need re-visit the gunsmith?
The problem is in the trigger disconnect safety spring. It's entirely possible your gunsmith didn't use a mk3 hammer or if he did, he didn't get the spring positioned correctly. if it was ME, I'd just convert it back to mk2 style with an mk2 hammer and chuck the goofy magazine disconnect safety. You didn't mention whether it's a mk3 or a 22/45 mk3.
Pawn, you NEED to return your mk3 back to gunsmith ASAP and let him fix it. I VERY SELDOM even let a firearm out of my shop until I've function tested it, and quite frankly, I'm HIGHLY surprised your "gunsmith" released it until it functions perfectly. ESPECIALLY after performing work such as that. I'm POSITIVE the other gunsmiths will back me up on that.