SKU: 100050326
UPC: 810033780257
MPN: SHIM-3102-SET
The Barrel Shim Set 1/2'' Inner Diameter from Yankee Hill Machine Co., Inc. is a precision accessory designed for shooters and gunsmiths who need fine-tuned barrel alignment and timing adjustments. This shim set addresses a critical need in tactical and precision rifle setups: achieving optimal concentricity between the barrel and receiver to maximize accuracy and reliability. Whether you're building a custom rifle, tuning an existing platform, or troubleshooting headspace and alignment issues, barrel shims provide a professional-grade solution without requiring permanent modifications to your firearm.
Barrel shims work by inserting between the barrel and receiver shoulder to correct minor misalignment and adjust timing on semi-automatic and bolt-action platforms. The 1/2'' inner diameter specification indicates compatibility with standard barrel tenon dimensions, allowing precise stacking to achieve desired headspace and runout tolerances. Yankee Hill Machine Co., Inc. manufactures this set to tight tolerances, ensuring consistent performance and repeatable results across multiple installations. The minimal weight (0.01 lbs) reflects the precision engineering involved—each shim is engineered as a critical component, not filler material, and contributes measurably to overall rifle performance and bullet-to-bore consistency.
Professional armorers, gunsmiths, and precision shooters depend on quality shim sets when assembling rifles that demand sub-minute-of-angle accuracy. This barrel shim set is ideal for AR-platform builds, precision bolt guns, and any rifle where barrel-to-receiver runout directly impacts field performance. Installation requires basic gunsmithing knowledge or professional guidance; improper shimming can affect headspace safety and accuracy. Always verify compatibility with your specific barrel diameter and receiver configuration before ordering, and consider consulting a certified gunsmith if you are unfamiliar with barrel timing and headspace adjustment procedures.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.
