Big Bore Stainless Seventeen Seventy Six 5/8x32

Helius Tactical
(11 reviews)
Current Stock:
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Our most patriotic brake, designed with quick American manufacturing in mind.  

All devices come standard with a free steel crush washer, but other locking options can be purchased to fit the build you're after.


MilSpec 416 Stainless, from a local supplier

3.3 Ounces

2.5" Length

.85" O.D.

.5" Thru hole, to fit a large variety of calibers. 

3 x .125" Comp holes, for vertical recoil reduction.

6 x .25" Brake ports, terminating slightly below the device's center-line to prevent prone dust up and maximize recoil reduction.


  • 5
    Muzzle Break

    Posted by Brian on Dec 26th 2023

    Great muzzle break! Looks good too!

  • 5
    What a deal

    Posted by Joe on Nov 11th 2023

    I'm impressed that this company sells this quality product at a very reasonable price. I have purchased 2 other popular brand big bore muzzle devices that were expensive and junk. As soon as they have the black ones back in stock I'm buying 2 more.

  • 5
    1776 5/8x32 450 brake

    Posted by Eran on Jul 31st 2023

    Flawless fit and finish, excellent add on. Tames the beast

  • 5
    Sweet Muzzle Brake

    Posted by Jamie E on Jun 19th 2023

    I received my big bore 1776 muzzle brake for my 450 Bushmaster AR Upper. The craftsmanship on the muzzle break is great. Fit perfect. Very fast shipping and great communication and made in USA!!!!!

  • 5

    Posted by Lou Layfield on Feb 19th 2023

    Installed on 10.5" 458 socom. Outstanding performance and appearance.

  • 5
    World class big bore muzzle brake

    Posted by Greg J. on Feb 1st 2023

    I couldn't be happier with this product. Built in a Great Lakes region of the United States is a huge plus. It is comparable with muzzle brakes costing MANY times more . Performs admirably also.

  • 5
    Big Bore muzzle brake

    Posted by Steven Kuhlman on Aug 16th 2022

    Great looking product. Fast shipping glad to support an American owned company

  • 5
    Quality piece great price

    Posted by John on May 31st 2022

    This part was a little hard to locate due to the thread count but these folks had it

  • 5
    1776 450 bushmaster brake

    Posted by Tavarus on Mar 16th 2022

    The brake is very slim nice machining and very smooth finish it looks gorgeous and is very well built it fits my 450 bushmaster excellently holds it value and it's loud and flat fast shipping and excellent customer service this brake and company is awesome will definitely recommend again and will be ordering again