Yankee Hill Machine Co Barrel Shim Set 1/2" I.D. – Universal Muzzle Device Timing

This precision shim set from Yankee Hill Machine Co provides accurate timing and indexing for muzzle devices on threaded barrels. When installing flash hiders, muzzle brakes, or compensators with indexed ports or slots, these shims allow you to achieve proper rotational alignment without over-torquing or under-torquing the device. The 1/2" inner diameter fits standard 1/2x28 and 1/2x36 threaded barrels commonly found on AR-15s, .223/5.56 rifles, and many pistol-caliber carbines.

Each shim in the set provides a specific thickness, allowing you to stack combinations until the muzzle device seats with correct timing when properly torqued. Constructed from durable steel, these shims maintain dimensional stability under heat and recoil. The set includes multiple shims in varying thicknesses to accommodate different barrel shoulder dimensions and muzzle device designs. Essential for anyone installing timing-critical muzzle devices on 1/2" threaded barrels.

• Type: Barrel shim set for muzzle device timing
• Inner Diameter: 1/2"
• Material: Steel
• Compatible Threads: 1/2x28, 1/2x36
• Compatible Firearms: AR-15, .223/5.56 rifles, 9mm carbines, other firearms with 1/2" threaded barrels