I’m old school, I use a PRI Gas Buster on my equally old school Armalite AR10 (utilizing the modded M-14 magazines) with good results.I purchased it for clearance for optic mount and easier manipulation. I might move to Geissele model if they have a decent sale on them but I’m in no rush. A Savage MSR/AR10,which has been lounging in a dealers inventory for quite a bit, has come home last week but it’s box stock for now.