SureFire Shim Kit, 1/2-28 101120201 a non-slip elastic head strap

a non-slip elastic head strap for use on a ball cap or directly on the user's head

Convenient 12-pack: Stock up with multiple ties so you always have the right size-ready solution when you need it

• Made from durable polycarbonate

the extended key is easy to use

Featuring a durable construction and a unique 3-DOT Tritium system

SureFire Shim Kit, 1/2-28 101120201 a non-slip elastic head strapSurefire Shim Kit, 1 2 28. Constructed of stainless steel, this shim kit from Surefire is a great solution to properly index your muzzle device. Designed with an outer diameter of . 700 & and inner diameter of . 510, this kit works with 1 2 x 28 TPI threaded barrels chambered in . 22 caliber, 5. 56mm or 9mm. Along with a tube of Rocksett in this kit, it also features 9 shims of various thickness to allow you to accurately install muzzle devices to