Mac-11 with SB15 wrist brace?

[War Squirrel]

Would an adapter like this with an SB15 wrist brace slid over the it be legal?

 

[dogmush]

Probably, but I'd want my own determination letter. That's outside the one that ships with a sb-15.

 

[War Squirrel]

How would I go about asking the tech branch about this? Anyone got any experience?

 

[Fishbed77]

Not with the VFG.

 

[MrTuffPaws]

If the gun isn't a SBR, then no due to the vertical fore grip on a "pistol". If it is a SBR then why bother with the brace.

 

[gotboostvr]

I don't think so, as it seems like it wouldn't work "as intended" as a pistol brace.
The pistol grip and brace would be offset too much to work properly.

 

[dogmush]

How would I go about asking the tech branch about this? Anyone got any experience?

Just write them and ask. Include a clear description of what you want to do, pictures and or model numbers, and the clearest description of how you want to assemble the parts.

In this case, I would mention that you will use a pistol buffer tube and it wouldn't readily accept a stock.

Send to:

Firearms Technology Branch
244 Needy Road Martinsburg,
West Virginia 25405 USA

Voice: (304) 616-4300

Or call them and ask how one would get a letter.

 

[War Squirrel]

Ok dogmush, I'll do just that this afternoon and post the results when I receive a response. Thanks for the information.

In terms of feasibility, an inline buffer tube mount such as this would be more practical I think.

 

[dogmush]

Actually, looking at the second pic, it seems like the SB-15 would be more useful as designed (strapped to your wrist) on a MAC then an AR.

Shouldering is, of course, optional.

 

[War Squirrel]

Lol I think you're right.
Check this out too.

http://www.usmachinegun.com/proddetail.php?prod=SF-ARAD2

 

[rodinal220]

When I hear Mac-11 I think .380. The pic posted looks to be a M11/9=9mm para.

Is your gun a semi-auto or a select fire gun? All this interest in AR pistols and SB15 arm braces has shed some light on this.

http://johnpierceesq.com/?p=602

 

[War Squirrel]

Thank you for that information rondinal220. I didn't know the 26" rule, nor did I know that they measure it with the stock extended. That opens a lot of potential. I do not yet have an M-11/9, semi or select fire, (thx for the correction) but centerfire has a good deal on some semi ones and I am considering a project.

 

[Art Eatman]

I messed around with a Mac 10 .45ACP, decades back. I acquired it as a gun-show trade-in. After a bit of playing around, it was obvious why the guy wanted out of it.

Controllable with the wire stock extended; pretty much useless, otherwise. Same for full-auto, I later discovered.

IOW, a Mac is not something I'd ever buy.

For sure, I'd check with BATFE before adding a stock to a pistol for which it was not original equipment.

 

[henschman]

I would suspect that it would need to be in line with the receiver to be considered an arm brace rather than a stock by anybody, the Feds included... which would then make the sights useless when the gun is shouldered, as they would be under your sight line. You would want to get a picatinny mount with a red dot in an AR-height mount for this to be any kind of a viable project, IMO.

Also, keep in mind that though the Feds consider the arm brace not to be a stock, there are a lot of different SBR laws on the state level, and the Feds' opinions have little to no bearing on how these state laws would be interpreted in a state court. For the most part we really don't know how this would shake out, as there have to my knowledge not been any appellate-level decisions on this issue in any state, with the SB-15 being such a new product. As a criminal defense attorney, I expect that this will not be the case for long.

 

[MistWolf]

-The BATF has determined the receiver extension is NOT a stock and is legal to attach to a pistol
-The BATF has determined the SB15 is NOT a stock and is legal to attach to a pistol

Arm braces, along with the needed adaptors & receiver extensions, have been added to pistols other than ARs without raising the ire of the BATF.

Sending a clearly worded letter of inquiry is a good idea

 

[jmorris]

If its a machinegun, you can do anything you want with the stock and grips anywhere you want too. No such thing as a SBR machine gun

 

[Arizona_Mike]

Are you asking about a semi-automatic pistol? Sinre this appear to be an m11/9, there are closed bolt semis (for .380s there are some grandfathered open bolt semis for which the rules can get a little complicated). If this is a manchine gun, SBR rules don't apply.

The SB15 would not make it an SBR. IF the OAL is >=26"' the veritcal foregrip will not make it an AOW. If <26" the vertiacal forgrip would make it an AOW.

Mike