AIM7 Gsh-0.5-28T ASR Muzzle Brake 1/2x28 to 13/16x16 Adapter Mount .223 5.56 9mm For Sale

AIM7 Gsh-0.5-28T ASR Muzzle Brake 1/2x28 to 13/16x16 Adapter Mount .223 5.56 9mmPLEASE READ BEFORE YOU ORDER: ASR stands for Active Spring Retention. There are many types of ASR thread pitches and models. This listing is exclusively for the 13/16x16 outer thread pitch.
(Must have an ASR tube adapter 13/16x16 for your HUB to work with any tubes. 13/16 × 16 TPI is 0.8125 in diameter with 16 threads per inch).

• ALPHA MOUNT: Diameter: 1.120\" outer thread (tube must have an ID Thread: 1-1/8 x 28 TPI)
  
• ALPHA TAPER MOUNT: Diameter: 1.120\" outer thread (tube must have an ID Thread: 1-1/8 x 28 TPI)
  
• BRAVO TUBE: Diameter: 1.136\" outer thread (tube must have an ID Thread: 1.375X24 OR 1-3/8X24 TPI)
  

The AIM7 Gsh-0.5-28T ASR Muzzle Brake is a 1/2×28 threaded muzzle device engineered for compatibility with ASR (Active Spring Retention) mounting systems. It enables quick and secure attachment or removal of ASR-compatible modular muzzle devices and blast deflectors, providing shooters with greater flexibility and convenience.
🔧 Key Features

• Thread Pitch: 1/2x28 — ideal for calibers such as .223, 5.56, 9mm, and similar.
  
• ASR Mount Compatible: Works seamlessly with industry-standard ASR mounting systems for fast, reliable modular device installation.
  
• Material: Made from SUS303 stainless steel, valued for its corrosion resistance, machinability, and durability.
  
• Dimensions:
  
  • Overall length: ~1.80″
    
  • Outside thread pitch (for ASR mount collar): 13/16×16
    
  • Bore size: 0.38″ — ensure it is appropriate for your caliber.
    

⚠️ Important Notes

• Caliber Matching: Always verify that the bore diameter of the muzzle brake is appropriate for your firearm’s caliber. Using a brake designed for smaller calibers on a larger bore can cause dangerous pressure spikes.
  
• Mounting: Check that your modular blast device is designed for use with a 1/2x28 threaded barrel and is compatible with the ASR mounting system.
  

🔍 Material Overview: SUS303 Stainless SteelThis muzzle brake is manufactured from SUS303 (equivalent to AISI 303), an austenitic stainless steel known for its ease of machining and corrosion resistance.

• Tensile Strength: Moderate (500–750 MPa)
  
• Corrosion Resistance: Good
  
• Magnetism: Non-magnetic (annealed condition)
  

⭐ SummaryThe AIM7 Gsh-0.5-28T ASR Muzzle Brake offers solid recoil reduction, modular blast device compatibility, and reliable performance at a reasonable price point. Its ASR system integration makes it ideal for shooters who want to switch between different muzzle configurations quickly and securely.
(Trademark Note: ASR is a registered trademark of SilencerCo. This product is an aftermarket accessory manufactured by AIM7 and is not manufactured, authorized, or endorsed by SilencerCo.)
1. General Safety & Liability DisclosureSafety & Installation Disclosure: Please ensure this item is compatible with your specific platform, caliber, and thread pitch before installation. We highly recommend that all installations, modifications, and fitment checks be performed by a certified gunsmith. The buyer assumes all risk and liability arising from the installation and use of this product. Always verify your firearm is unloaded and safe before performing maintenance.
2. Legal Compliance DisclaimerLegal Compliance: This item is strictly a muzzle brake designed exclusively for recoil reduction and forward blast direction. It fully complies with \'s firearms accessories policies. It is the buyer\'s sole responsibility to know, understand, and comply with all applicable local, state, and federal laws regarding the purchase and possession of this item.
3. California Proposition 65 Warning & AB-1263 COMPLIANCEWARNING: This product can expose you to chemicals including machining fluids, which are known to the State of California to cause cancer and birth defects or other reproductive harm.
ATTENTION CALIFORNIA RESIDENTS: Due to California Assembly Bill 1263, the sale and delivery of firearm accessories and related parts into California require mandatory age and identity verification. Before this item can be shipped to a California address, all regulatory conditions must strictly be met.