Re: mws stock swap
The A2 stock and buffer tube are the same on a .308 as a 5.56 , but you will need a .308 rifle length buffer (which is shorter than the 5.56) and not the same as your .308 carbine buffer. If you install it and pull the charging handle all the way back, and you can still see the bolt group in the ejection port, than you have a 5.56 buffer in there.