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AccuWasher® Gen 2 – The Ultimate Muzzle Device Alignment System
The AccuWasher® Gen 2 Muzzle Device Alignment System by Precision Armament offers a smarter, safer way to install muzzle brakes, compensators, and suppressor mounts. Say goodbye to unreliable crush washers and fussy peel shims — this single-shim solution delivers precise, repeatable alignment every time.
Machined to exacting tolerances, each AccuWasher is lathe-turned on both faces for guaranteed flatness and thickness consistency. The result? Perfect muzzle device timing without guesswork, even under torque loads of 30–60 ft-lbs.
Designed for professionals and serious shooters, the Gen 2 system includes thinner shim profiles, new size compatibility, and optional adapters to fit heavy barrels and varied thread pitches. Whether you're mounting a brake on your AR-15 or aligning a suppressor on a custom build, this system delivers clean aesthetics and unmatched reliability.
🔧 Key Features:
- Single-shim system ensures better alignment than crush or peel washers
- Machined flat surfaces for consistent torque application
- Compatible with standard and heavy barrel threads
- Easy-to-use timing chart included
- Improves accuracy and prevents baffle strikes
- Available in multiple shim packs and adapter kits
Perfect your installation with the AccuWasher Gen 2 — engineered for precision, trusted by gunsmiths.
WARNING: This product can expose you to Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to - www.P65Warnings.ca.gov.
Customer Ratings & Reviews
Ratings Snapshot
out of 5
5
(21)
4
(0)
3
(0)
2
(0)
1
(0)
Would recommend this product.
100%
out of 5
5
(21)
4
(0)
3
(0)
2
(0)
1
(0)
Would recommend this product.
100%
Makes mounting a brake easy
PNW Hunter
Location: WA State
Date:
May 28, 2021
Great option to 'clock' a brake correctly. Excellent variety of thicknesses and quality is top notch.
Verified Buyer
Recommended
Quality and easy to read
Mike
Location: OKC
Date:
August 12, 2020
Quality mase product
Verified Buyer
Recommended
Great solution
Jeff
Location: East tennessee
Date:
November 5, 2019
Works very well aligning birdcage or muzzle brake on my rifles!
Verified Buyer
Recommended
Muzzle Brake Timing Washers
guypatten
Location:
Date:
October 28, 2019
These made mounting a new brake so easy. The Job was done in just about 5 minutes.
Recommended
Easy 308 Muzzle Brake Shims
patten
Location:
Date:
October 25, 2019
These 308 muzzle brake shims made mounting a new brake so easy. I completed the job in about 5 minutes.
Recommended
Worked just like i needed
Ray
Location: MO
Date:
September 11, 2019
Needed to adapt a Dead Air muzzle device to my AK and since my threads were just slightly longer than the muzzle device this washers allowed me to properly set the height and secure it. After alignmrny i put over 200rnds through it without any movement observed via the indexing mark. These worked like a charm
Verified Buyer
Recommended
REB
REB
Location: northwest
Date:
August 27, 2019
GOOD QUALITY CARD HOLDER....
Verified Buyer
Recommended
Much more useful than crush washers
Paul
Location:
Date:
August 9, 2019
The Muzzle Alignment System finish excellent, and I was able to identify different sizes. Much more useful than crush washers or spacer tape. It was always a pain to index flash suppressors and compensators accurately. It is effortless to blemish finish or even torque the barrel involuntarily. Ordering and shipping from MSP were painless, arrived on time. Will probably order another set soon. Precision armament had a couple of other products I purchased as well, again, the finish was nice and tight.
Recommended
Fixes problems
Dan
Location:
Date:
July 29, 2019
I wanted to index my muzzle brake and the crush washer supplied with the brake was not working out. I purchased this washer kit as a solution. There are enough washers in this kit to install multiple brakes, and the quality is excellent. I would not hesitate to purchase this again.
Recommended
Good Product
Anonymous
Location:
Date:
July 10, 2018
They don't exactly match up the end of the barrel as far as Diameter. Its a little bit off center, but definitely works to get your flash suppressor located correctly. You will have to devise a way to get the washer to center perfectly though.
Verified Buyer
Recommended
Precision Armament Accu-Washer Muzzle Device Alignment System
Bruce
Location: Arizona
Date:
May 24, 2018
OUTSTANDING product. I bought a cheaper shim system and tried like hell to get a single shim to be the right size, I did not want to use multiple shims. Even using multiple shims from that kit I could not get the timing correct. This Precision Accu-Washer system took me three sizes and done. Very easy and fast, the best part one shim. I wasted my money on a cheaper product, don't waste yours buy this system first.
Verified Buyer
Recommended
Precision Armament Accu-Washer
moose
Location: USA
Date:
May 22, 2018
Washers are of good quality and with 18 to chose from you have more than enough to mount any muzzle device. I would use these over a crush washer every time.
Verified Buyer
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