Permanent muzzle device that allows for attachment of suppressor

**NomadShadow** · December 10th, 2011, 02:53 PM

I would like to build an AR-15 with a 12" bbl that I could attach a suppressor to, but I don't really feel like paying for two tax stamps (one for SBR one for suppressor). I've heard of people permanently attaching a suppressor to their barrel, but that solution is less than ideal IMHO. Recently while browsing the website for Tactical Solutions (www.tacticalsol.com), I saw their SB-X barrel for the Ruger 10-22, which is a 12" bbl with a permanent muzzle device that is large enough for a suppressor to fit inside, with standard threads to allow for the attachment of said suppressor. That particular shape (the hollow cylinder) is not actually all that difficult for a machinist to make from what I'm told, so I was thinking of doing something similar to a 12" AR-15 barrel. I was wondering if anyone here knows a good reason why that would be a bad idea.

**H22ate** · December 10th, 2011, 11:56 PM

I dont know how the ATF's mind works but they might say its some type of suppressor any way. They would still probably have to put an approval on it, just like with some mfr flash suppressors like the Noveske kx3. Im not sure how that would work, I actually thought about doing something very similar to that before I filed my form 1 for my SBR so I wouldnt have to worry about it.

**ithinkimamedic** · December 11th, 2011, 07:00 AM

In theory you should not have to do anything as long as the requirements are met that the length is at least 16 inches. A hollow tube alone would be on the dangerous side and it also wouldn't allow you suppressor to adequately cool. When I say dangerous side I simply refer to the BATFE thinking it may be a suppressor of some sort, I believe Tac-sol defeats this argument with the hole/shapes it has cut out of the "tube" that it has attached to make the length legal.

A suggestion might be to figure out which suppressor you are going to use, possibly a QD (for ease of attaching and removing from within the tube). Then attach said QD mount to said 12" barrel, once applied then build the outer "tube" with cooling slots and weld it onto the barrel making sure to leave room to grasp the suppressor sufficiently to get it off of the mount.

Food for thought on how I would go about building said device if I were to do a project like this. I am not a lawyer though and can offer nothing other than my interpretation of how the law would work in regards to this.

**ungawa** · December 11th, 2011, 09:12 AM

Sounds like a lot of work to save $200 and end up with a goofy rifle. How much of that $200 do you think you'll end up saving?

**NomadShadow** · December 11th, 2011, 11:45 AM

Originally Posted by ithinkimamedic

...
A suggestion might be to figure out which suppressor you are going to use, possibly a QD (for ease of attaching and removing from within the tube). Then attach said QD mount to said 12" barrel, once applied then build the outer "tube" with cooling slots and weld it onto the barrel making sure to leave room to grasp the suppressor sufficiently to get it off of the mount.
...

Good idea, I didn't think of that. I was just planning on mounting directly to the threads of the barrel, but sounds like it'd be a bit easier.

Originally Posted by ungawa

Sounds like a lot of work to save $200 and end up with a goofy rifle. How much of that $200 do you think you'll end up saving?

I fully expect to pay MORE than the $200 it would take for the SBR tax stamp. Most of the issue is that I don't particularly feel like dealing with the BATFE more than I really have to. That, and curiosity. I'm very interested to see if this will actually fly. As for the goofy rifle part, maybe I'm just a goofy guy. ;-)

**ungawa** · December 11th, 2011, 12:15 PM

Got it. I was just trying to look at the problem and some viable solutions and I had that epitome before I solved anything

I'm assuming you are aware that there are comps designed to bring 14.5" barrels to 16" and are compatible with certain suppressors. But I guess that's a couple inches longer than you wanted.