View Full Version : ar15 upper reciever swap

12-16-2011, 9:37 AM
Ar15 newbie here...

Thinking of swapping only the upper receiver and reusing all the other parts. The original upper is plastic. Is there anything I should look for or is it a straight swap?


Coyote Brown
12-16-2011, 10:06 AM
What do you have newb? A rimfire S&W or Colt?

12-16-2011, 10:50 AM
Could be a bushmaster carbon 15. Not sure if it has special parts to it. ie barrel nut. I do not think they have forward assist so you would have to get those parts or build a slick side.

Nathan Krynn
12-16-2011, 11:05 AM
Some of those carbon 22lr AR pattern rifles are not made to AR-15 specs so they cant be swapped around.

12-16-2011, 4:13 PM
sell it and just get a new upper. Not worth investing in all the tools required if you're only going to do it once.

12-16-2011, 4:55 PM
I will say it in a more polite way: what upper do you have?

and yes truth be told it is probably more worth while to just purchase or build a new upper if the one in question is plastic

12-16-2011, 6:08 PM
Thanks for all the responses. Sorry, forgot the details. It was actually for a friend. It is a bushmaster carbon 15. He has the stripped upper already and thinking of just moving all the parts ie: barrel, gas system... for now. Ammobros quoted him $65 for the swap. Is it worth it?



12-16-2011, 6:25 PM
here you go. just do everything in reverse for disassembling it. be careful when your wrenching on that plastic upper if you don't want to break it