My one friend, who isn't a lawyer, but went through the ATF paperwork for a SBR and suppressor said that technically a cop can't request to see your paperwork for a SBR. Now if some cop is harassing you about it, and you lie about something then that's breaking the law, but technically they can't request to see your paper work or arrest you for you possessing something they think is illegal. But, now, let's be real though, if the cop is having a bad day, and some guy is giving the cop a hard time for questioning his arm brace, then that cop might find some reason to arrest that person for something else. But that same friend did have to explain to a former cop, who was shooting at my range that day, about the legalities of his AR pistol, which has an armbrace on it. So, in short, if you're shooting a Glock with an arm brace attachment, then you're not doing anything wrong. If some people who work there, or a cop, starts giving you shit, then just leave that range and never go back, but technically that cop can't arrest you for something like that.

It's all about knowing when to be civil and polite and explain that it's just an arm brace, and knowing when to just shut the fuck up, pack up your bags, and leave.

I don't have an issue just leaving if someone is giving me trouble. I'm more wondering about leaving and Barney Fife deciding to snag me before I can go.

I was thinking the same thing, I have the SD40ve, they both have the grove behind the mag well for the Endo to slip into, the question is whether it's big enough for the Endo to slid into. Plus I think we would have to drill a hole for the pin to slide into place. I'm thinking of buying one to find out .

Marshall Jones-Paragon Fury no

Yes, until the ATF says you can't again.

So I don't need a tax stamp with this setup ?