my original Series 80 Colt Custom shop Combat Elite. Which has a collet bushing BTW.
I have a 1984 Government Model that has the collet bushing.You've got one of the early Series 80s that's technically a Series70/80 pistol. During the transition, Colt...never one to waste perfectly good parts...just used up their existing stocks of collet bushings and accurizer barrels. Fairly rare.
Just be sure to back the slide up a half inch before turning the bushing and you'll probably never have a problem with it.
The new gun is a good job of recreating a pre 70 Commercial Model. Woulda been dead on with a nicer finish.
That's about the right timeline for a 70/80. The first Series 80s appeared in early '83.I have a 1984 Government Model that has the collet bushing.