Is a glock with a sig arm brace attached to it still a handgun?

Yes. Have you found or made an adapter?

Be careful.

 

There is a whole bunch of silliness happening right now over the sig arm brace and a shotgun/SBS/AOW and it's possible impact on pistols.

 

Nothing official, but speculation by those I trust is that ATF may be getting close to reversing or amending their ruling on the Sig Brace.

 

I would proceed with caution and discretion.

I read letter and IMO does not affect pistols. You can always take it off.

Agreed.

Yes. Have you found or made an adapter?

I saw this and thought the idea would be interesting

 

Attaching a Sig Brace to a Thompson Pistol intrigues me, as I can't stand the length of that rifle stock, and I love short barrels.

Probably fine, on a Federal level, but what effect would it have in NJ?

Probably fine, on a Federal level, but what effect would it have in NJ?

Everything is illegal in NJ.  There is no point to ask.