Description Aim7 Archer Muzzle Brake BX3 1/2×28 556/223 AIM7 Muzzle Brake – 3 Port, Stainless Steel Type: ASR – Muzzle Device 13/16X16 Type: Muzzle BrakeMaterial: SUS303 Stainless SteelConfiguration: 3-Port Gas Redirection Specifications: Thread Options: 1/2×28, Overall Length: 2.20in Diameter: 0.99″ in Port area 0.722″ Weight: weight, e.g., 2.3 oz Finish: Raw stainless (optional coatings available) Tolerance: Precision-machined to 3B thread standard Performance Characteristics: Triple-port design reduces felt recoil and muzzle climb Optimized port geometry for consistent, balanced gas redirection SUS303 stainless offers excellent corrosion resistance and machinability Smooth surface finish with tight thread engagement ensures durability and reliability Applications: Competitive shooting platforms Precision rifles and carbines Tactical training and range use Environments requiring high corrosion resistance Notes: Classified as a muzzle brake — not a suppressor; contains no baffles or sound-reducing elements Gunsmith installation is recommended for proper alignment and timing Material Detail: SUS303 Stainless Steel General Description:SUS303 is an austenitic chromium-nickel stainless steel known for its excellent machinability and corrosion resistance. It is a modification of SUS304 that incorporates the addition of sulfur or selenium, enhancing cutting and threading performance. Chemical Composition (Typical %): Chromium (Cr): 17.0 – 19.0% Nickel (Ni): 8.0 – 10.0% Manganese (Mn): ≤ 2.0% Silicon (Si): ≤ 1.0% Carbon (C): ≤ 0.15% Sulfur (S): 0.15 – 0.35% (for machinability) Iron (Fe): Balance Mechanical Properties (Annealed Condition): Tensile Strength: ~ 620 MPa (90 ksi) Yield Strength (0.2%): ~ 240 MPa (35 ksi) Elongation: ~ 40% Hardness: ~ 160–190 HB (Brinell) Key Characteristics: Corrosion Resistance: Comparable to SUS304 under mild environments; less resistant in chloride-rich or acidic environments due to sulfur addition. Machinability: Excellent — specifically developed for improved cutting, drilling, and threading. Magnetic Properties: Non-magnetic in annealed condition; may become slightly magnetic after cold working. Heat Resistance: Up to ~ 870 °C (1600 °F) in continuous service. Applications: Precision mechanical components Fasteners and threaded parts Shafts, couplings, and fittings Firearm accessories (muzzle brakes, mounts, compensators) where machinability and corrosion resistance are important Limitations: Slightly reduced toughness and corrosion resistance compared to SUS304 or 316 due to sulfur content Not recommended for highly corrosive or marine environments









