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Barrel Shim Set to be used to correctly orient a timed muzzle device. This set is used with our 30 Cls Q.D. Muzzle Brakes.  This shim kit has an inner diameter of 5/8" and is made of stainless steel.

Included with this shim kit are shims with the following thicknesses:

  • 2x 0.002"
  • 5x 0.005"
  • 1x 0.020"
  • This shim kit has an inner diameter of 5/8"


3 Reviews Hide Reviews Show Reviews

  • 5
    Barrel Shims

    Posted by Mike G on Feb 26th 2024

    Shims worked great. Nice tight fit between barrel and gas system.

  • 5
    Timing Shims

    Posted by Mike Courson on Oct 31st 2023

    As expected, I was able to properly time my flash suppressor to my AR15. I wanted to hand tighten the suppressor without a crush washer so I could rotate it out frequently with my silencer.

  • 5
    Shim kit

    Posted by Don Packer on Jan 11th 2023

    Fast shipping, easy install

Yankee Hill Machine Co., Inc. does not offer for sale any controlled product (serialized parts) directly to the end user. This includes Complete YHM-15s, Sound Suppressors, and Lower Receivers. Follow these steps when purchasing to ensure that you receive your order as quickly as possible.

1. Visit (or call) your local firearms dealer and tell them exactly what model number you are looking for (If ordering a sound suppressor keep in mind the dealer needs to be a Class 3 dealer). If your dealer of choice does not currently a offer YHM products don't worry. They can easily become a YHM dealer.

2. IMPORTANT NOTE: EVEN IF A PRODUCT IS OUT OF STOCK ONLINE, DEALERS CAN BACK ORDER THE ITEM AT ANY TIME. Placing your order through a dealer gets you on the back order list and ensures that you will receive your product in the fastest manner possible. This can be applied to any item you are looking for on the website.

Once the order is placed, as soon as the product is ready to go out the door the dealer will be notified and the product will be on its way.

3. Once the dealer receives your order they should contact you to come and pick it up.

Manufacturers Disclaimer:
You, the purchaser are responsible to know your local, regional, state and federal firearms regulations regarding assault rifles and NFA weapons (Such as sound suppressors and short barreled rifles) when purchasing our products. Some of our products in this catalog require a Federal Firearms License and/or S.O.T for purchase.

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