Member 34319
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- #61
The CMMG has a proprietary radial delayed blowback system. I believe it uses just a plain old carbine buffer and spring with its bolt and carrier. Similar reciprocating mass as a regular AR. So less felt recoil from the action cycling.What kind of buffer setup will your new one have? I run a 7.5oz solid buffer and extra power carbine spring, and its soft and smooth from 115gr to 147. It is however, the only PCC I have shot, so I don't have a lot to go on.