Lever Gun Two Chamber Muzzle Brake

Product Details
18 Reviews

Large two chamber design reduces muzzle climb
Constructed from tool steel with a phosphate finish
Includes new crush washer
100% made in the U.S.A.
Lifetime Warranty

MB9 (1/2x28" - .357)

For use up to 9mm/9x19/.357 rifles caliber firearms
1/2x28" threads
.410" diameter hole

MB10 (.357)

For use up to .357 caliber firearms
5/8-24 threads
.410" diameter hole

MB11 (45-70)

For use up to 45-70 caliber firearms
5/8-24 threads
.500" diameter hole

MB12 (45-70)

For use up to 45-70 caliber firearms
11/16x24 threads
.500" diameter hole

Weight 4oz

*Midwest Industries is NOT responsible for installation and usage of incorrect muzzle devices on firearms*
*Please consult certified gunsmith to determine correct threads and hole diameter of muzzle device needed*

MUZZLE COMPATIBILITY

18 Reviews Hide Reviews Show Reviews

4
S&W 1854 .357

Posted by Christopher leak on Jul 3rd 2025

Overall it gets a 4/5, fit was perfect and comes with a crush washer. I deducted 1 point for some finish issues on the inside of the muzzle area. I haven't test fired it yet
4
Ream/bore to fit Henry H012x 44 Mag

Posted by Vinh DO on May 2nd 2025

First off, I want to say I’m a big fan of MI products. Their material quality and craftsmanship are second to none. I recently purchased the MB11 muzzle brake for my Henry H012X .44 Mag. I was informed that it would be compatible—and while it kind of was, it didn’t thread on as smoothly as expected. Technically, it wouldn’t screw on without resistance. I could’ve forced it, but I didn’t want to risk damaging the barrel threads. Instead, I took it to my local gunsmith, who had to bore/ream the hole slightly to get it to fit properly. That service cost me $42—almost the same price as the MB11 itself. That said, once installed, the performance was solid. The MB11 noticeably reduced recoil by about 25%, which made a big difference in shooting comfort and follow-up shots. Despite the initial fitment issue, I’m still very happy with the product. The performance and build quality are excellent, and I will continue to recommend MI products without hesitation.
5
2 chamber muzzle brake

Posted by Brian on Nov 17th 2024

I put one of these on my Henry X model 45-70. Besides looking great, it's very effective at recoil reduction. Made quite the difference. It's not real comfortable to the guy's on the bench next door though. A great brake for the money.
5
Muzzle Brake-It reduced recoil made shooting comfortable.

Posted by GARY D BECKER on Jul 1st 2024

It works good to reduce recoil. It was worth the time and money.
5
Muzzle break for .44 mag Henry

Posted by Kenny on Jun 7th 2024

Shipped on time, looks great, really good price. Thank you
5
357 Rossi/Citadel LevTac 92

Posted by Jordan on Jun 7th 2024

Effective brake with nice quality. Be sure to confirm your thread size before purchasing. I wasn't paying attention when adding it to my cart while buying another MI product and didn't read that it was for a 5/8x24 thread. My LevTac92 is a 1/2x28 and I needed to put an adapter on to make it work. Luckily its been holding up and working as intended.
5
Lever Gun Muzzle Break

Posted by Donald Buckner on May 13th 2024

Perfect fit, reduces muzzle rise and felt recoil. The only draw back, you cannot use the magazine tube for loading and unloading because the break extends down into its path. I just used the side gate for loading not a big problem.
4
Lever Gun Two Chamber Muzzle Brake

Posted by Maurice Greer on Mar 22nd 2024

Seems well made and finished. However, for a Henry Big Boy X, it needs to have a flat milled on 1 of the rear rings to allow for the Henry magazine tube to be removed.
4
Doesn't fit Rossi 92 357

Posted by B1taco on Feb 19th 2024

Fast shipping looks to be well made but doesn't fit the Rossi 92 357 totaly my fault for not doing research place i purchase the rifle from didnt list thread size but fyi its 1/2x28 ordered a adapter for it so we will see how it proforms