Sin Arms SINISTER Muzzle Brake

    Sin Arms is a company located in Watertown, SD. They are specialized in precision shooting products manufacturing and services. Several days ago the company has introduced a new muzzle brake called Sinister.

    The Sinister brake is made of 416 stainless steel. It is a .30 caliber brake and according to Sin Arms, it works great with .300 Winchester Magnum. They also claim it to have 25% more port volume compared to similar size brakes, which makes it more effective especially with magnum calibers. The ports of the brake are tilted by 5 degrees facing upward. This orientation of the ports allows the muzzle brake to also work as a muzzle rise compensator. The edges of the ports are radially chamfered to prevent catching on and damaging the clothes and equipment.

    The Sinister brake comes with a lock nut which allows the end user to time his muzzle brake himself using basic tools. The brake weighs 5 oz. It is threaded for 5/8×24 tpi thread pitch, however, the company is working to introduce more thread pitch options. The 1/2×28 thread pitch will be the next and they may also offer it with 18×1 metric thread pitch. Sin Arms will also introduce it for larger calibers (namely a .338 version) in near future.

    Right now the Sinister brake is available at an introductory price of $79.99 including the shipping. This offer will last until the December1, 2017. After that date, it will be sold at $99.99.

    Hrachya H

    Managing Editor

    Being a lifelong firearms enthusiast, Hrachya always enjoys studying the history and design of guns and ammunition. He also writes for and
    Should you need to contact him, feel free to shoot him a message at [email protected]