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Questions & Answers
Sorry if this is a dumb question but I’m new to building. Does this brake need a crush washer and does it need to be timed?

If you're gonna run a can on it then you should not use a crush washer. It is best to use shims. Crush washers compress unevenly and can cause your brake to become misaligned or crooked and you do not want that when running a can.

by Steven P., Verified Owner, July 28, 2025
I know muzzle brake's inherently make it "louder" for the shooter and those around them, but has anyone experienced that with this device?

I have not noticed a significant difference between this muzzle break vs the stock muzzle devices that come with my Ruger rifles. I will point out that the reason you get this specific muzzle device is to use the Silencer Co ASR mount for suppressors. When not running the suppressor you can attach the Kaw Valley ASR linear compensator that will decrease precieved sound for the shooter.

by Nick S., Verified Owner, February 19, 2025
Customer Reviews
Helpful Positive Review
Better Than Original by FourtyFive Snob, Verified Owner, November 12, 2025
I like Kaw Valley Precision ASR muzzle brakes better than the original manufacturer brakes because all of them have a .50” bore as opposed to a caliber specific bore based on internal threads. I’ve built quite a few pistol caliber carbines lately and...
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2/2 found this helpful
Helpful Positive Review
Smooth finish works as advertised by RCH, Verified Owner, January 3, 2026
The KVP ASR mount muzzle device is an effective ASR mount. The mount is made well. Mounts smooth & the finish is a great look & is easy to keep clean after shooting suppressed.
1/1 found this helpful
Helpful Positive Review
Kaw Valley Precision ASR mount by Lupe Ayala, Verified Owner, December 31, 2025
They really knocked out out the park with these !! All being .500 bore don’t have to worry about the caliber. Just the thread.
1/1 found this helpful
Helpful Positive Review
ASR mount / muzzle brake by Mike, Verified Owner, February 14, 2025
Perfect fit for SilencerCo silencers. It doesn't need to be timed.
2/2 found this helpful
Helpful Positive Review
great product at a good price by Shootingsparrow, Verified Owner, February 14, 2025
This muzzle device works very well with ASR mounts and is much more affordable than Silencerco
2/2 found this helpful
Helpful Positive Review
very nice!!! by dgrnn1, Verified Owner, February 20, 2025
Bought a couple of these to fit a suppressor on different rifles with different thread pitches. Work perfectly! Fit is great. Got them for a silencerco 46m.
1/1 found this helpful
Read All 91 Reviews

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Product Info for Kaw Valley Precision ASR Muzzle Brake

The Kaw Valley Precision Muzzle Brake is seamlessly engineered to be fully compatible with ASR (Active Spring Retention) mounting systems. Designed to effortlessly attach and detach from your firearm, brake ensures quick and hassle-free adjustments to your shooting setup.image

Specifications for Kaw Valley Precision ASR Muzzle Brake:

Manufacturer: Kaw Valley Precision
Color: Black
Finish: Black Nitride QPQ
Fabric/Material: 17-4 Stainless Steel
Length: 2.05 in
Weight: 3.6 oz

Package Contents:

  • Kaw Valley Precision ASR Muzzle Brake

Kaw Valley Precision ASR Muzzle Brake Orderable Models

List of Orderable Models

  • Kaw Valley Precision ASR Muzzle Brake, 5/8x24, Black, KVP-BRAKE-ASR-02 , MPN: KVP-BRAKE-ASR-02 , UPC: 793888382565 , Code: 4S3-BMB-MZZLB-KVP-BRAKE-ASR-02
  • Kaw Valley Precision ASR Muzzle Brake, 1/2x28, Black, KVP-BRAKE-ASR-01 , MPN: KVP-BRAKE-ASR-01 , UPC: 793888382367 , Code: 4S3-BMB-MZZLB-KVP-BRAKE-ASR-01
  • Kaw Valley Precision ASR Muzzle Brake, .578x28, Black, KVP-BRAKE-ASR-07 , MPN: KVP-BRAKE-ASR-07 , UPC: 793888389168 , Code: 4S3-BMB-MZZLB-KVP-BRAKE-ASR-07
  • Kaw Valley Precision ASR Muzzle Brake, M14x1 LH, Black, KVP-BRAKE-ASR-10 , MPN: KVP-BRAKE-ASR-10 , UPC: 793888389465 , Code: 4S3-BMB-MZZLB-KVP-BRAKE-ASR-10
  • Kaw Valley Precision ASR Muzzle Brake, M13.5x1 LH, Black, KVP-BRAKE-ASR-11 , MPN: KVP-BRAKE-ASR-11 , UPC: 793888389564 , Code: 4S3-BMB-MZZLB-KVP-BRAKE-ASR-11
  • Kaw Valley Precision ASR Muzzle Brake, 11/16x24, Black, KVP-BRAKE-ASR-05 , MPN: KVP-BRAKE-ASR-05 , UPC: 793888382862 , Code: 4S3-BMB-MZZLB-KVP-BRAKE-ASR-05
  • Kaw Valley Precision ASR Muzzle Brake, 1/2x36, Black, KVP-BRAKE-ASR-04 , MPN: KVP-BRAKE-ASR-04 , UPC: 793888382763 , Code: 4S3-BMB-MZZLB-KVP-BRAKE-ASR-04
  • Kaw Valley Precision ASR Muzzle Brake, 5/8x32, Black, KVP-BRAKE-ASR-03 , MPN: KVP-BRAKE-ASR-03 , UPC: 793888382664 , Code: 4S3-BMB-MZZLB-KVP-BRAKE-ASR-03
  • Kaw Valley Precision ASR Muzzle Brake, 3/4x24, Black, KVP-BRAKE-ASR-08 , MPN: KVP-BRAKE-ASR-08 , UPC: 793888389267 , Code: 4S3-BMB-MZZLB-KVP-BRAKE-ASR-08
  • Kaw Valley Precision ASR Muzzle Brake, 9/16x24, Black, KVP-BRAKE-ASR-06 , MPN: KVP-BRAKE-ASR-06 , UPC: 793888385566 , Code: 4S3-BMB-MZZLB-KVP-BRAKE-ASR-06
  • USED, Kaw Valley Precision ASR Muzzle Brake, M18x1.5, Black, KVP-BRAKE-ASR-09 , MPN: KVP-BRAKE-ASR-09-EDEMO , Code: 4S3-BMB-MZZLB-KVP-BRAKE-ASR-09-EDEMO-DF-D
  • Kaw Valley Precision ASR Muzzle Brake, M18x1.5, Black, KVP-BRAKE-ASR-09 , MPN: KVP-BRAKE-ASR-09 , UPC: 793888389366 , Code: 4S3-BMB-MZZLB-KVP-BRAKE-ASR-09

Kaw Valley Precision ASR Muzzle Brake Unavailable & Discontinued Models

List of Unorderable Models

  • USED, Kaw Valley Precision ASR Muzzle Brake, 1/2x28, Black, KVP-BRAKE-ASR-01 , MPN: KVP-BRAKE-ASR-01-EDEMO , Code: 4S3-BMB-MZZLB-KVP-BRAKE-ASR-01-EDEMO-OB-C
  • USED, Kaw Valley Precision ASR Muzzle Brake, 5/8x32, Black, KVP-BRAKE-ASR-03 , MPN: KVP-BRAKE-ASR-03-EDEMO , Code: 4S3-BMB-MZZLB-KVP-BRAKE-ASR-03-EDEMO-RE-C
  • USED, Kaw Valley Precision ASR Muzzle Brake, M18x1.5, Black, KVP-BRAKE-ASR-09 , MPN: KVP-BRAKE-ASR-09-EDEMO , Code: 4S3-BMB-MZZLB-KVP-BRAKE-ASR-09-EDEMO-OB-C
  • USED, Kaw Valley Precision ASR Muzzle Brake, 1/2x28, Black, KVP-BRAKE-ASR-01 , MPN: KVP-BRAKE-ASR-01-EDEMO , Code: 4S3-BMB-MZZLB-KVP-BRAKE-ASR-01-EDEMO-RE-B
  • USED, Kaw Valley Precision ASR Muzzle Brake, M14x1 LH, Black, KVP-BRAKE-ASR-10 , MPN: KVP-BRAKE-ASR-10-EDEMO , Code: 4S3-BMB-MZZLB-KVP-BRAKE-ASR-10-EDEMO-RE-B
  • USED Kaw Valley Precision 1/2x28 Muzzle Brake Mount for ASR, Black, Small, KVP-BRAKE-ASR01, EDEMO1, Used, Condition Fair , MPN: KVP-BRAKE-ASR01-EDEMO1 , Code: 4S3-BMB-MZZLB-KVP-BRAKE-ASR01-EDEMO1
  • USED, Kaw Valley Precision 5/8x32 Muzzle Brake Mount for ASR, Black, Small, KVP-BRAKE-ASR03 , MPN: KVP-BRAKE-ASR-03-EDEMO , Code: 4S3-BMB-MZZLB-KVP-BRAKE-ASR03-EDEMO-RE-A
  • USED, Kaw Valley Precision ASR Muzzle Brake, 11/16x24, Black, KVP-BRAKE-ASR-05 , MPN: KVP-BRAKE-ASR-05-EDEMO , Code: 4S3-BMB-MZZLB-KVP-BRAKE-ASR-05-EDEMO-RE-A
  • USED Kaw Valley Precision 5/8x24 Muzzle Brake Mount for ASR, Black, Small, KVP-BRAKE-ASR02, EDEMO1, Used, Condition Like New , MPN: KVP-BRAKE-ASR02-EDEMO1 , Code: 4S3-BMB-MZZLB-KVP-BRAKE-ASR02-EDEMO1
  • USED, Kaw Valley Precision 1/2x28 Muzzle Brake Mount for ASR, Black, Small, KVP-BRAKE-ASR01 , MPN: KVP-BRAKE-ASR-01-EDEMO , Code: 4S3-BMB-MZZLB-KVP-BRAKE-ASR01-EDEMO-RE-B
  • USED, Kaw Valley Precision 5/8x32 Muzzle Brake Mount for ASR, Black, Small, KVP-BRAKE-ASR03 , MPN: KVP-BRAKE-ASR-03-EDEMO , Code: 4S3-BMB-MZZLB-KVP-BRAKE-ASR03-EDEMO-RE-B
  • USED, Kaw Valley Precision 5/8x32 Muzzle Brake Mount for ASR, Black, Small, KVP-BRAKE-ASR03 , MPN: KVP-BRAKE-ASR-03-EDEMO , Code: 4S3-BMB-MZZLB-KVP-BRAKE-ASR03-EDEMO-RE-C
  • USED, Kaw Valley Precision 1/2x28 Muzzle Brake Mount for ASR, Black, Small, KVP-BRAKE-ASR01 , MPN: KVP-BRAKE-ASR-01-EDEMO , Code: 4S3-BMB-MZZLB-KVP-BRAKE-ASR01-EDEMO-SC-C
  • EDEMO, Kaw Valley Precision 1/2x28 Muzzle Brake Mount for ASR, Black, Small, KVP-BRAKE-ASR01 , MPN: KVP-BRAKE-ASR01-EDEMO , Code: 4S3-BMB-MZZLB-KVP-BRAKE-ASR01-EDEMO-RE-A
  • USED, Kaw Valley Precision 5/8x24 Muzzle Brake Mount for ASR, Black, Small, KVP-BRAKE-ASR02 , MPN: KVP-BRAKE-ASR-02-EDEMO , Code: 4S3-BMB-MZZLB-KVP-BRAKE-ASR02-EDEMO-RE-B
  • USED, Kaw Valley Precision 1/2x28 Muzzle Brake Mount for ASR, Black, Small, KVP-BRAKE-ASR01 , MPN: KVP-BRAKE-ASR-01-EDEMO , Code: 4S3-BMB-MZZLB-KVP-BRAKE-ASR01-EDEMO-DF-C
  • USED, Kaw Valley Precision 5/8x24 Muzzle Brake Mount for ASR, Black, Small, KVP-BRAKE-ASR02 , MPN: KVP-BRAKE-ASR-02-EDEMO , Code: 4S3-BMB-MZZLB-KVP-BRAKE-ASR02-EDEMO-RE-A
  • USED, Kaw Valley Precision 11/16x24 Muzzle Brake Mount for ASR, Black, Small, KVP-BRAKE-ASR05 , MPN: KVP-BRAKE-ASR-05-EDEMO , Code: 4S3-BMB-MZZLB-KVP-BRAKE-ASR05-EDEMO-RE-C
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