FAQ: Q: Why real avid armorer’s Master wrenches? A: Smarter, stronger, ergonomic. It fits your hand and your gun – precisely. The Real Avid Armorer’s Master Wrench features best-in-class strength, precision fitment and ergonomic intelligence. Wrenches seat squarely for a no-slip fit on stubborn barrel nuts, castle nuts, muzzle brakes, or fixed stock receiver extensions. … Read more