Dead Air Armament Muzzle Device Shim Kit

One notch Qty 4, .004'' thick, ~40 degree rotation, ~1/9 turn Two notches Qty 5, .006'' thick, ~60 degree rotation, ~1/6 turn No notch Qty 1, .060'' thick, ~1.7 turn The Dead Air Shim Kit for barrels with 1/2-28 or 5/8-24 threads is composed of three different shim thicknesses. The graphic on the packaging details the thicknesses and identifying features of the shims included with the kit. Always place the thickest shim(s) on the barrel first. Specifications Brand: Dead Air Armament Manufacturer part #: DA001 UPC: 810128160605 Category: On Gun & Other Accessories › Barrels & Accessories Shipping weight: 0.02 lb Country of origin: CN Ships fast from GunCycle — free economy shipping on orders $99.99+.