The B-Square is about the only mount you'll find that works the best, unless you have somebody drill/tap the receiver. I have a B-Square on my 870 with a Bushnell "Trophy" Red Dot scope, and it's been solid. One thing I did do to mount, was I took some masking tape and put on underside of mount to keep it from scratching, when mounting it, as it's snug going around receiver.
Del