TOP GUIDELINES OF MAVERICK 88 12 GAUGE FOR SALE

The 590A1 is the one mossberg that is definitely mil-spec. It is latest challenge IIRC. Hard to conquer, and I do not own just one. I would be prepared to guess that 870s contain the degree of recognition in Regulation Enforcement which they do partly as a result of 'Adhere to the leader' and partly due to the fact mil-spec frequently costs extra.