Precision Armament M4 Muzzle Thread Adapter
DescriptionM4 Muzzle Thread Adapter Allows Precision Attachment of 5/8-24 Muzzle-Devices to 1/2-28 and 9/16-24 barrels
Ideal for attaching our 5/8-24 threaded M11 and M41 Severe-Duty™ Muzzle Brakes to your 1/2-28 or 9/16-24 threaded barrel, as well mounting suppressors and other alignment critical muzzle devices. Wrench flats on shoulder make installation and removal for use on multiple devices simple and easy. Both Internal and external threads are single point cut in same operation to tight UNEF Class-3 tolerances for perfect concentricity and alignment. Compact design moves muzzle device only .100” forward maintaining full thread joint strength. The M4 muzzle thread adapter is precision CNC machined from pre-hardened HTSR 400-series stainless steel bar for superior heat and corrosion resistance.
Available in an advanced PVD (Physical Vapor Deposition) matte-black finish, offering exceptional durability and corrosion resistance at high temperatures, making it ideal for full auto fire as well as suppressor applications. Also available in matte stainless finish.
1/2-28 Barrel Thread Adapter: Perfect for attaching any 5/8-24 muzzle device to the standard 1/2-28 AR-15/M16 barrel thread.
9/16-24 Barrel Thread Adapter: Ideal for attaching 5/8-24 muzzle device to the 9/16-24 threaded barrel on most 6.5 Grendel’s.Product Specifications
- Material: HTSR 416 stainless steel bar
- Hardness: HRC 26-32
- Finish: PVD Matte Black – or – Matte Stainless
- External Thread: 5/8-24 UNEF Class-3
- Internal Thread: 1/2-28 or 9/16-24 UNEF Class-3
- Length: 5/8″
- O.D.: 0.825″
- Flats: 0.750″
- Weight: 0.24 oz.
Customer Ratings & Reviews
9/16-24 to 5/8-24 thread adapter is Really handy
Had a 6x45mm barrel in this 9/16 x 24 thread pattern, and trying to find breaks in this pattern is hard. Alexander Arms uses this pitch but hard to get parts. Well, they make lots of breaks on 5/8 x 24. Problem solved. Mounted a break, and everything works great!
1/2-28 to 5/8-24 adapter Perfect fit
Does exactly what it is supposed to do. Threads are machined better than the threads on my suppressor
5/8-24 to 1/2-28 thread adapter
Self-explanatory product. I got this so I can put a surefire .308 break on my AR-15. This way I can use one can on all my rifles. Product very well made.