Helps Prevent Crown, Throat & Chamber Damage
Replaces the bolt carrier, seals the upper receiver and provides safe and effective cleaning from the breech instead of the muzzle. Solid aluminum rod guide helps prevent throat and chamber damage plus, the rubber "O" rings keep bore cleaning solvents out of the lower receiver.
AR-15, Issue:11, Page:079
Big Book Catalog, Issue:70, Page:078
SPECS: Machined aluminum, AR-15 - red, anodized
finish. 10" (25cm) long. Fits .223 only. AR-10 - blue,
anodized finish. 11.5" (29.2cm) long. Fits .308 only.