Quote Originally Posted by jonconsiglio View Post
You mean longer barreled hosts, right...? I have a 10.5 LMT I run suppressed all the time and there's little shift. I've run Surefire on 16" KAC barrels with no more that 1 MOA shift.

You shouldn't see much sag at all in an SBR with any profile really compared to a 16".
No. I meant shorter barrels.

Take a 10.3'' LW barrel, and hang an NT4 on it. Then do the same thing with a fatty barrel.

The fatty barrel will have less shift every time, IME.

And Colt's are worth it, because their fat barrels are stupid accurate.

I like 'em.