ULTIMATE Gearbox Bearings - 7mm xmas pistols 2021 So if you fail to

So if you fail to cock the gun on pulling back the bolt

Ships with a hard plastic protective case

Made in USA

with Knight's Armament stamped markings

Fast Focus eyebell

ULTIMATE Gearbox Bearings - 7mm xmas pistols 2021 So if you fail toA set of 7mm bearings from ULTIMATE. These bearings are precision made in Japan from solid steel. The 7mm design minimises friction and wear whilst maximising the efficiency and alignment of the gears. An absolute must if you plan on building a high torque high speed gearbox. These bushings do not contain ball bearings like the 8mm bushings, but they are comprised of several rotating parts and are not a single cast piece. View our entire range of