Originally Posted by
Bret
I have a CMMG 10.3" SBR. The only way that I could get it to work reliably was to install the lightest buffer I could find (H1 I think) and use Federal M193. Prvi M193 does not cycle the action 100% of the time. Forget about commercial 223Rem. I have not tried heavier bullets. If I had to do it over, I'd definitely not go with a 10.3". 10.5" would be the minimum for sure. I'm now waiting on a stamp to be approved for a Colt 6933 (11.5" barrel). Can't wait to pick it up.
H1 isn't a light buffer. Is that a typo?
"Real men have always needed to know what time it is so they are at the airfield on time, pumping rounds into savages at the right time, etc. Being able to see such in the dark while light weights were comfy in bed without using a light required luminous material." -Originally Posted by ramairthree
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