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Precision Armament 5/8Xx24 Accu-Washer Muzzle Alignment System

Manufactured by Precision Armament
SKU: A02219
MPN: A02219
Manufactured by Precision Armament
1 Review

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Precise timing of your muzzle device has several benefits. For muzzle brakes, it allows you to perfectly orient your brake to match your shooting style. With suppressors and suppressor mounts, a properly aligned muzzle device will drastically reduce the risk of baffle strikes and enhance accuracy and repeatability. The Accu-Washer System from Precision Armament is the fastest and easiest muzzle alignment system on the market. Each washer is precision cut to a guaranteed thickness +/- 0.0001" for incredible accuracy and available in 18 sizes with timing adjustable from 0-360 degrees in 20-degree increments. Cut from 400-series stainless with a durable non-reflective oxide finish.

This is a full set of all 18 5/8x24 Accu-Washers.


  • 5/8 x 24 with .825" outer diameter
  • 18 washers in 20-degree increments
  • 400-series stainless steel
  • Oxide blasted matte grey finish

Precision Armament produces a variety of high end accessories, muzzle devices, and more in their modern CNC manufacturing facility. With their full product line designed around rock solid reliability and enhanced reliability. From precision machining to exotic materials, Precision Armament creates products unmatched in performance and backed by a full lifetime guarantee.
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BrandPrecision Armament
Caliber Gauge.30 Cal
MaterialSteel - 400 Stainless
Suppressor MountNon-Mount
Thread Pattern5/8 X 24
TypeShim Kit
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.

Ratings & Reviews

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Accu-Washers RULE


I'll never use a squash washer or those little bitty shims again. Was never crazy about the concept behind the squashes, and those little shims try to get lost in the barrel thread relief or if the muzzle device has a big chamfer. These Accu-Washers are the only way to go. Thick enough to span any reasonable thread relief, bigger O.D. covers big chamfers and small counterbores in devices. And on and off they'll always make up the same. One set has gotten me thru 4 rifles so far.