I have both an 870 Wingmaster and 590A1 with 18.5" barrels.
My 870 has jammed up once or twice in 3 years. My 590A1 has not yet failed to properly cycle and fire each and every round put through.
The choice really comes down to each guns ergo's, what kind of stock you want really.
Good point! The ergo's of a pistol grip Mossberg makes thumbing the safety difficult. All my shotguns have regular stocks.




















































