Question about repalcing ACR barrel
I am toying with the idea of buying another ACR and modifying it. I would like an enhanced with the short gas system on a 14.5 inch light weight barrel.
Can a DD M4 barrel with carbine gas system be used on an ACR? I understand that I would have to shorted the op rod,install the rod carrier and have the gas block pinned. My main concerns are the gas port size.Would it work or would it be "over gassed"?
It would be over gassed from what I have read the factory gas port is .059 and the DD is like 0.072 IIRC.
^^ correct, I know that hk94dude was running a .063 gas port on his 10.5" acr and it was cycling fine