Muzzle Brake Thread Adapter | 1/2x28 to 5/8x24

Convert your 1/2x28 TPI threaded barrel to accept 5/8x24 TPI muzzle devices with the muzzle brake thread adapter — CNC-machined from heat-treated steel with a black oxide finish for durability and corrosion resistance. Thread-on installation takes approximately two minutes with no gunsmithing required.

Key Features

• Precision Thread Conversion — Internal 1/2x28 TPI threads onto barrel; external 5/8x24 TPI accepts muzzle devices
• CNC-Machined Steel — Heat-treated steel construction for strength and durability under sustained fire
• Black Oxide Finish — Wear-resistant coating resists heat and corrosion
• Tight Tolerances — Precision-machined for solid, vibration-free lock-up
• No Gunsmithing Required — Simple thread-on installation in approximately 2 minutes

Compatibility

Threads onto any barrel with 1/2x28 TPI threading (standard for .223/5.56 rifles). Converts to accept 5/8x24 TPI muzzle devices (standard for .308/7.62 rifles).

Note: This adapter converts thread pitch only. Ensure your muzzle device is rated for the calibre you’re firing — do not use a .223-rated muzzle device on a .308 barrel.

What's in the Box

• 1x Thread adapter (internal 1/2x28 TPI, external 5/8x24 TPI)

Installation

1. Ensure rifle is unloaded and safe
2. Remove any existing muzzle device or thread protector
3. Thread the adapter onto the barrel (1/2x28 TPI)
4. Hand-tighten securely
5. Attach your 5/8x24 TPI muzzle device to the adapter
6. Verify alignment and tighten to specification

Complete Your Rifle Muzzle Setup

• .308 Muzzle Brake (5/8x24 TPI) — Ideal 5/8x24 muzzle brake to pair with this adapter
• .223 Muzzle Brake (1/2x28 TPI) — Direct-mount option for 1/2x28 barrels without an adapter
• .223 +5 Magazine Extension (Magpul PMAG) — Increase PMAG capacity for 3-Gun and competition
• 2-Piece Threaded Squib Rod — Essential safety tool for barrel obstructions

Frequently Asked Questions

Can I use a .308 muzzle brake on a .223 barrel with this adapter?
Thread-wise, yes — the adapter converts the thread pitch. However, ensure your muzzle device is rated for your calibre. A .308-bore muzzle brake on a .223 barrel will function but may provide reduced effectiveness since the bore diameter is larger than the projectile.

Will this add length to my barrel?
Yes — the adapter adds a small amount of length between the barrel shoulder and the muzzle device. This is typically negligible for competition and hunting use.

Is the adapter strong enough for sustained fire?
Yes. Heat-treated steel construction with tight tolerances ensures the adapter handles sustained fire without loosening. Check torque periodically as part of standard rifle maintenance.

Orders are typically dispatched within 24–48 hours on business days (Mon–Fri, excluding public holidays). All shipments include tracking details once dispatched.

Estimated Delivery Times

• Australia: Express 1–3 business days, Standard 3–7 business days (metro vs. regional may vary).
  
• International: Options shown at checkout; all orders shipped with tracking.

Please note that delivery times are estimates and may vary depending on the carrier or location. Retain packaging and contact us if you experience any transit issues.