Receivers are the same. Either go with a commercial spec or mil spec buffer tubr, and be sure to have a matching buffer tube.
Check out dsgarms.com for aftermarket stoch , buffer tube, buffer, spring enplate and castlenut nut packages.
Assumption is the mother of all ****ups.
Know what you know, Know what you don't know. -Paul Pedzolt
"Jack of all trades, master of none, though oftentimes better than master of one" -Mynshul