Is it possible to swap out JUST the plastic portions of a Colt Car-15 stock and a new Colt M-4 stock (both collapsable) without removing the tube, etc from the gun?  I have a Colt Govt Carbine with a Car-15 stock and don't want to break the factory stake marks on the nut that holds the stock tube to the lower receiver.

Thanks for any help in advance!

Tfisch67

Colt spec tube, Colt spec stocks(Vltor, Colt, LMT, etc.)...no problems.  They should swap out as far as I know.

As long as they are both Colt it will be easy.  Just pull the extension bar straight down.  If you pull it far enough the plunger will come out far enough that the car piece will slide right off.  The other colt m4 piece will slide on in the same fashion.

If you have trouble getting the original one off, I sometimes like to pry up a little using a screwdriver.  A lot of the M4's are easier because you just have to rock the lever as far as it will go and the plunger will move the entire way up.

That's good news.  Thanks guys!!