The 590s have 8+1 capacity standard and an aluminum trigger guard / assembly (instead of the plastic one on the 500). They may also be factory equipped with a heat shield, sling swivels, bayonet lug, ghost ring sights, collapsing stock, etc. The can be had in blue, parkerized or marine (nickel) finishes. The Mil Spec model is in current use by the US Army, USMC and Air Force. They have an aluminum receiver but the bolt to barrel lockup is all steel. The current issue of Gun Tests has a test of one model, which they downgraded because of the poorly done collapsing stock.Tactical_Texan_CHL wrote:What's the difference between the 500 and 590?
I like mine
