I want to convert my 10.5 9mm upper to a 10.5 .300 blackout. I think I can still use the same gas system. Swap the barrel and BCG. Add a new buffer and I’ll be good to go. Am I correct on this? Thanks for any help.
I have a 10.5 inch 9mm upper that I want to convert to .300 blackout. If I stay the same length can I use the same gas system? Swap the barrel and BCG and maybe the buffer? Any help would be appreciated.