I ordered the 6.4 pound ( advertised 4&3/4lb) 20” rear charging upper today.
Don’t know how their points work but they gave me 15.9 of them.
Didn’t want to deal with an ambi upper that is open on both sides(no dust shield). Read many stories of the side charger falling off and loosing while hunting( I’d hate not being able to load my gun if it happened), not being able to clear a jam with a side charger, having to remove the handle with an Allen key every time I want to remove my bolt for a jam or cleaning, and the bolt hitting and catching on trees, branches, and brush when cycling or just walking through brush. Read about some three gunners catching their side chargers on obsticales as well and couldn’t clear their jams with the side charger models. Biggest thing for me is no dust shield with both sides open because I hunt in some really sandy and dusty areas. Not trying to pick a fight but that was my justification for choosing a rear charging upper.