The current winner for a brace - Gear Head Works Tailhook Mod 2 Telescoping Pistol Stabilizing Brace

I should point out first that the one-armed brace function on this item is very effective and does exactly what it should.

Now if you simply had to shoulder this brace to protect yourself during exigent circumstances to protect your life, I'd venture to say that you'd be happier to do so with this brace, more than any others. It's also nicer to look at than something with a velcro strap hanging off it.

The adjustable feature isn't the smoothest, but it works just fine, I promise. What you're getting out of this brace in the long run goes far beyond the adjustability.

If you're constructing an AR pistol, this is the current go-to, imho. I'm not telling you to throw out your sba3 or maxim pdw brace if you're happy with them, but if you're building new, or simply cant stand looking at the velcro, spend the hundred and get this thing. If you got money to burn and enjoy the pdw's like I do, wait for the gear head KES to come around.