Granted light weight is all the rage. Personally I feel that one's "weight reference point" is something that needs to be consistent especially in tactical training, whatever that point is. I built mine up to emulate the weight of my trusty Bushmaster so I'm not stuck aiming a 'feather' at targets one day, & the weight/quality of Bsh.Master.223 the next..just my 2 cents.
Oh! Rock River's 2 stage trigger is 'nutnfancy's' choice on you tube..but that is a such a personal preference issue. Looking back I would have shopped around much more for value ..too late now it's decked out..almost!..