Late to the party. i dont remember reading the gas tube length or might have missed it.....Mid length gas systems have been recommended for some time to lessen recoil and wear on the BCG. Check the Geissele wound recoil spring as this also reduces recoil and take that annoying “ping” sound out of the butt stock....light weight ? Gunners profile barrels by Faxon and Bravo company offers shooter an overall lighter weight rifle with excellent accuracy for build. I went a bit further and got a pencil barrel which has worked well
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