A conversion kit is not going to hurt your barrel.
Of course you have guys that will shoot 1000 rounds through it without cleaning or blowing out the gas tube, then complain how it clogged the gas port.
Common sense will keep you going.
I shoot 500 rounds, pull the bolt, pull a Boresnake through it a couple times while the barrel is warm, put the 5.56 BCG in and fire 5 rounds of 5.56.
When I get home I clean it properly, just like I would if I were firing 5.56.
I have 3 CMMG kits and have never had issues with my 5.56 uppers I use them in.
Dave
Independent Field Testing/R & D
Better to die for something than live for nothing
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