Price Check: Mid-Eighties Colt Officer Model 1911
The collet bushing was used ONLY in the original Series 70, which was a specific model of full-sized 1911 from Colt. It was never used in Commanders or in the Officers ACP. The Officers barrel bushing, in particular, is too short to have the "fingers."1stmar said:I don't recall exactly when but colt was using barrel bushings that were a collet and the were known to break.