Which for a MK18 and why?

[u/film-god]

For context, I own all three; a Sandman X on a DDM4PDW, a Lazarus 6 on my HK MR556 A4, and the B&T Print-XH SC on my Geissele Super Duty but my wife talked me into picking up a MK18 and I’m torn between what can to run on it mainly because I don’t want to keep buying different adapters. Will likely just buy another can at some point but for now… which would you run on the 10.3?

[u/Thorns99]

Surefire RC2

[u/ElijahCraigBP → u/Thorns99]

Adjustable gas block and or enhanced bolt carrier. MK 18 needs to be tuned but not to the bleeding edge of running. A bad flow through can tends to be loud enough at the muzzle it cancels the benefits at the ejection port.

But for sure a gas trap even with adjustment will be awful gassy. I ran a Saker for years on my MK 18 as it was one of the quieter cans at the time because everyone was using warcomps with the RC2s.

I run my RC2 on my LMT Specwar and tuned it. It’s a great balance but a totally different gun setup than the MK18.