So I recently, 2 weeks ago, purchased a new colt combat unit cco in 9mm. Last night I decided to take the grips off to change the mainspring housing. The first screw I tried was turning but not coming out!!! So I stopped turning it and took the other 3 out. They all came out fine. So I put some pressure from the reverse side on the grips and tried unscrewing the first one again. Well it came out.. but more popped out than unscrewed. The pressure I put on the grip while unscrewing was not a lot. So now I have a grip screw and bushing that are stuck together in my grip. By turning it I may have damaged the threading in the frame. But I do not think that is my fault, bc I should expect to be able to unscrew a grip screw without the bushing turning in place. I contacted colt.
Seems the assembler at colt tightened the screw too much. I will update when I hear from Colt, if I ever hear from Colt.