Machined, steel, barrel bushings provide a tight, slide to barrel fit; available in both Government and Commander. Heat treated and hardened for outstanding durability. Drop-In - Close, drop-in fit on Colt slides. Requires no fitting with Ed Brown Barrel and Colt slides. Other brands may require minor fitting. Oversize - Requires turning of O.D., and reaming of I.D., to achieve a true match fit. Commander available in Drop-In, Stainless Steel only. SPECS: Steel, blue or stainless steel (SS), silver,
matte finish. Drop-In (DI) - .581' (14.8mm) I.D., .699'
(17.7mm) O.D. Oversize (OS) - .575' (14.6mm) I.D., .705'
(17.9mm) O.D. Commander available in Drop-In, (SS)
only.