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+--- Thread: pin AND weld? or just pin or weld? (/showthread.php?tid=14937)
pin AND weld? or just pin or weld? - The Profit Joseph Sith - 12-29-2017
Whats the laws regarding muzzle devices on the 14.5" barrels can i just pin this (myself) or do i also need my buddy to mig weld the pin in? OR can i just weld the shoulder of the MD the shoulder of the barrel so i can cut it off later and reuse the MD?
also wondering if i need to grind to bare metal if i need to weld? The MD will be a VG6 nitrided. I imaging the surface treatment will contaminate the weld?
TIA!
pin AND weld? or just pin or weld? - AZHTfreak - 12-29-2017
When I built my 14.5, researched it pretty thoroughly. Pin AND weld is one of 2 or 3 ATF required methods. I dremeled an old drill bit for the pin and had a buddy MIG weld it. He counter sunk the pin hole with a 3/16" so the weld had clean metal to combine with... Of course ATF would have to destroy the muzzle device/barrel to confirm it's done right :-|
pin AND weld? or just pin or weld? - The Profit Joseph Sith - 12-30-2017
Yeah good point. I was wondering because i have two PSL's ones imported with the MD welded directly to the barrel (no pin) and lug neutered. The other was imported de milled as a kit and absolutely everything is virgin. Its interesting that the requirements are different for importing. Thanks AZ.
pin AND weld? or just pin or weld? - Chrazy-Chris - 05-27-2018
I was wondering this too. I'd really like a grendel upper that's somewhat maneuverable with my Specwar762 (the thing is a beast) so I was thinking either 14.5" pinned/welded or the Faxon 12" on my pistol lower. I move too often and cross state lines too often with my rifles to bother with the SBR tag otherwise I'd just pay out the 200 bucks. I just don't feel right about putting a 2-10x standard eye relief scope on a "pistol" ... seems pretty obvious what I'm doing with that one there. Owning the brace already kind of weirds me out.
pin AND weld? or just pin or weld? - Lastrites - 05-30-2018
The two methods that I recall is high temp silver soldered, and the other is pin & weld. The P&W is a as mentioned above, drilling hole in the muzzle device and into the barrel and then welding that spot over the top of pin. I don't believe they will accept just a weld on the edge of the MD attaching to the barrel.