Fixed stock rifle buffer (5.0 oz) and a Geissele braided wire spring. With rifle length gas, a standard gas block would be fine, but an adjustable gas block really settled it down.
edit to add: oops, missed the part about a 16...this is a monster 20 RLGS
edit to add: oops, missed the part about a 16...this is a monster 20 RLGS

