Sb tactical pistol brace - SB Tactical SBPDW Pistol Stabilizing Brace for Mil-spec AR-15 Receivers

I used the SB Tactical SBPDW Pistol Stabilizing Brace for my Mil-Spec AR-9. Since the upper receiver and barrel on the AR9 makes the pistol top heavy, this brace creates a perfect balance with it's weight, rigidity, and function. The extension bars work flawlessly and lock solidly into their locking positions. This brace, along with a heavy buffer were all I needed to make my AR9 run smoothly.