Buffer system for DD mk18 .70 port

[17K]

A rifle length port is .093”. I don’t think that would even work on a carbine barrel.

As fas I know, 14.5” and 16” Colt carbine barrels have ALWAYS been ported at .0625”. The earliest ones I’ve been around were 16” 1/9” twist hbar and even those were .0625”.

[Core781]

A rifle length port is .093”. I don’t think that would even work on a carbine barrel.

As fas I know, 14.5” and 16” Colt carbine barrels have ALWAYS been ported at .0625”. The earliest ones I’ve been around were 16” 1/9” twist hbar and even those were .0625”.

I remember seeing some old commercial 16" carbine barrels with huge gas ports .080" ish. And once listening to some industry guys explain why they needed a larger gas port to run crap ammo. I had a good laugh and pissed them off a bit. Oh well, always a justification to make a quick buck and a bit with a bit of halfassery.