The Manticore Arms Brass Buster (brand part no. MA200) is a dedicated brass deflector engineered specifically for the Steyr AUG platform. It mounts over the AUG’s ejection port and redirects spent casings down and away from the shooter’s face instead of letting them fly free, a real benefit for left-handed shooters or anyone running the AUG from an awkward shooting position. Manticore Arms molds the deflector from polymer, keeping it lightweight and non-marring against the receiver finish, and builds it as a reversible, ambidextrous unit so it works whether the rifle is set up for right- or left-side ejection. Because it is purpose-built for the AUG’s unique bullpup ejection geometry, it installs without any fitting or modification to the rifle, and the same deflector also fits the MSAR STG-556 and TPD AXR series, which share the AUG’s bullpup receiver.

Key Specifications

• Steyr AUG-Specific Fit is molded to match the AUG’s unique bullpup ejection port geometry.
• Brass Deflector Function redirects spent casings down and away from the shooter’s face.
• Reversible, Ambidextrous Design works for right- or left-side ejection setups.
• Also Fits MSAR STG-556 and TPD AXR Rifles covers these AUG-pattern bullpup platforms.
• Polymer Construction keeps the deflector lightweight and non-marring against the receiver.

Frequently Asked Questions

What rifle does this fit? The Steyr AUG, plus the MSAR STG-556 and TPD AXR series bullpup rifles.

What does a brass deflector do? It redirects spent casings ejected from the AUG down and away from the shooter’s face.

Does it work for left-handed shooters? Yes, it is a reversible, ambidextrous design for either right- or left-side ejection.

Buy the Manticore Arms Brass Buster Deflector for Steyr AUG

Keep hot brass off your face with a Manticore Arms Brass Buster from our gun parts and accessories selection. Order online and we will ship it straight to your door from our Lubbock, Texas gun shop.