I have a 21 with straight stock, splinter forend and double triggers in 12 ga. with 28" barrels. It weights a couple of ounces over 7#. The American walnut stock has been hollowed out as much as prudent and it wears a Winchester red butt pad.

It's butt heavy. It could use a bit heavier set of barrels or a lighter butt stock.

It's light for a M21 12 ga. Perhaps a more typical 12 ga will have the balance point forward.