I have a few ARs some with and some without muzzle devices. On the two with comps they are pin welded and topped with silver solder to make it visible. Is it required to make the weld visible? What if I JB welded the end, you certainly would destroy the barrel to get the device off and would that make it legal? Is the visible "pin" just so on sight it can be inspected?

I know pin welding is one. What's the other?

There are two ways to make a muzzle device legal.....in NJ and according.tto.the feds.....JB weld isn't.one of them

 

 

 

 

Nick - What are the two ways? Who determined the ways? My understanding the law says "permanently". The two ways I know of are pinned and welded and just welded. Now if tack welded, lets say at the bottom the weld can be ground and the comp removed. So what is permanent?

There's three that I know of. Dunno where you get two.

 

Blind pin covered with weld. Silver soldered using solder with a melting temp of 1100F or better. External seem weld around X% of the circumference of the muzzle device. The last is just a giant PITA for DIY, and not really undoable even with a machine shop, so nobody really does it. If you have a dedicated machine it could be quick on an assembly line though.

 

However, I don't believe the BATFE ever set out to define permanent. You ask if the method you propose is sufficient and get a reply. Myself, I'd wonder what they would say about rockset adhesive. You need 1200 degrees in theory to remove stuff put on with it.

I'm sticking with pin welding. I know this sux, but what can you do. I'm working a 9mm ar so I just wanted to know.

 

Do you guys do pin welding?

This is just my opinion. The ATF guidlines are for making an NFA barrel non NFA. In other words what do they consider a level of permenant that makes 2 pieces of metal one piece of metal so as not to violate NFA laws. They do not indicate what they consider to be a permenant attachment of a muzzle brake to a barrel that is not NFA. NJ does not give any indication either. So this is one of those grey areas. However, the one item of inerest to me is this. Unfortunatly the state only seems to be willing to speak to companies large enough to hire legal teams. But I am betting that before any large company risked having all their product seized in NJ, someone agreed that blind pinning a stock on an ar was considered permenant. So how can you say a blind pin is considered permenant on one side and not the other?

yep....!

 

Great, I have a grendel barrel that I'm waiting on the comp from Alexander arms. I'll get the barrel from my FFL of the SCAR (unless he'll bring you the whole rifle, don't know) and I'm in the process of working either a 9mm conversion or a 6.8, neither of which have the device pinned.

This is just my opinion. The ATF guidlines are for making an NFA barrel non NFA. In other words what do they consider a level of permenant that makes 2 pieces of metal one piece of metal so as not to violate NFA laws. They do not indicate what they consider to be a permenant attachment of a muzzle brake to a barrel that is not NFA. NJ does not give any indication either. So this is one of those grey areas. However, the one item of inerest to me is this. Unfortunatly the state only seems to be willing to speak to companies large enough to hire legal teams. But I am betting that before any large company risked having all their product seized in NJ, someone agreed that blind pinning a stock on an ar was considered permenant. So how can you say a blind pin is considered permenant on one side and not the other?

 

Shane your answer is what I was trying to bait Nick into. NFA stuff is what it's all about.

Sorry to derail your fishing expedition

LOL