4The Deflector Brake eliminates brass burns by forcing spent brass to consistently drop 3-4 ft next to you instead of scattered all over. Great for left handed shooters or off shoulder firing because it pushes flying brass forward and away from your face. The Deflector Brake works absorbing the tremendous amount of energy normally contained in the ejected casing and reduces the speed and distance the brass travels by 60% on average. AR-Charging Glass (ARCG) protects the paint/coating under your charging handle where rifles inadvertently take abuse to aesthetics. It is like pulling the charging handle over glass or ice. Package includes: (4) Deflector Brakes, (4) Prep-Pads, (1) Deflector Brake Sticker and (1) small parts box.