#Battle-Bar
Smith Tactics Battle-Bar: Ar15 Bolt Catch Extended to the Pistol Grip
A company called Smith Tactics manufactures an AR-15 bolt catch accessory – the Battle-Bar. It mounts on the lower receiver over the AR-15 bolt catch/release button extending it to the rear, to an area above the safety selector. The idea behind this accessory is to make bolt catch button manipulations faster and easier using the thumb of your primary/shooting hand.