AccuWasher® Gen2 Shim Adapter
Precision Armament
$4.75 - $9.50
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Precision Armament
AccuWasher® Gen2 Shim Adapter
DESCRIPTION
Utilizing the AccuWasher® Shim Adapters, you gain additional benefits, including:
- Universal Compatibility: Works with nearly all standard thread diameters and pitches up to ¾”.
- Metric Compatibility: Supports nearly all metric thread diameters and pitches up to 18mm.
- Bull Barrel Optimization: Special large-diameter AccuWasher® kits are available in popular thread sizes for bull barrels.
- Sleek, Aesthetic Finish: Designed for a seamless, professional appearance that standard shims can't achieve.
FREQUENTLY ASKED QUESTIONS
The AccuWasher® Gen 2 is an upgraded version of the Precision Armament original single-shim muzzle device alignment system. It allows for precise, repeatable alignment of muzzle brakes, compensators, and suppressor mounts—eliminating the guesswork and inconsistency of peel washers and crush washers. Gen 2 features new shim sizes, thinner profiles, and adapter compatibility for broader use across different thread sizes and barrel profiles.
The Gen 2 system offers several improvements over the original:
| Feature | Gen 1 | Gen 2 |
|---|---|---|
| Shim Sizes | 1/2” and 5/8” kits only | Now includes 1/2”, 5/8”, and 3/4” kits |
| Outside Diameter (OD) | 1/2” shim: 0.750” | 1/2” shim: 0.725” (smaller for a sleeker fit) |
| Shim Thickness | 5/8” shim: 0.060”-0.100” | 5/8” shim: 0.040”-0.080” (thinner for finer adjustment) |
| Compatibility | Limited to fixed thread sizes | Now compatible with all common thread sizes and barrel profiles via shim adapters |
| Interchangeability | 1/2” shims not compatible | 5/8” Gen 1 and Gen 2 shims are interchangeable |
| Aesthetic | Standard fit | More flush and professional finish with adapters |
The shim adapter serves three key functions:
- Expands compatibility - Allows use of the AccuWasher system on multiple thread sizes and barrel profiles that were previously unsupported.
- Improves fit and finish - Enables shooters to size up to achieve a cleaner visual transition between the muzzle device and barrel shoulder.
- Adds modularity - Makes the Gen 2 system future-proof and more versatile for both OEMs and end-users.
Note: If included in your kit, the adapter should be installed before the indexing shim.
Yes! The new shim adapters are backwards compatible with the original system. This means current Accu-Washer users can upgrade their setup without replacing their entire kit.
Yes. Shim adapters are available in both 1-pack and 3-pack options and can be purchased separately through our website or authorized dealers.
We've created an easy-to-follow and detailed instruction manual with a printable timing chart. If you have questions, feel free to contact our service team:
Phone: 585-593-4975
Email: sales@precisionarmament.com
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