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Suppressors Rex mg7 358

Thinking of getting a Rex Mg7 .358 for my Mpx. How is everyone attaching their Rex cans? I want to 3-lug but I only know of Yankee Hill having a 3lug adapter.
Email the manufacturer and ask what the rear threads are.

There are several manufacturers that sell 3 lug kits. I have a Griffin one including a muzzle device that I could let go if the threads match up.
 
I'm using Rex's QD HexLug for my 358 MG7 on 9mm, but it's kind of assed backwards in terms of QD mounts. All the heavy, spring components go on the barrel, with just the female receiver into the can. Works well, just looks kind of odd if left exposed.

@alamo5000 they use 1.375-24 "Bravo" mount threads at the back, which is why he mentioned the YHM 3 Lug.
@Outlaw45 They're the only ones I know of that make a 3 Lug fit that pattern. Unless you get the booster assembly for a SilencerCo Hybrid , then you can use their 3 Lug mount for the Octane/Omega K series.