12-gauge introduced in 2000. Features 6-round tubular magazine and 18.5" barrel. Choice of plain bead sight or ghost ring. Choke is Fixed Modified. Weight about 7 lbs. A 14" barreled model also offered, but NFA rules apply. NOTE: Add $50 for ghost ring sights.

Model 500 with 20" barrel and 9-shot magazine. Introduced in 1989; discontinued.

A 12-gauge pump with 3" chamber, 20" long heavy-walled barrel, measures 41" overall. Ghost ring/AR-style sights. Length of pull 13.875". Features synthetic Speedfeed stock and Parkerized finish. Thumb safety atop receiver. Capacity 8+1 rounds; weight 7.25 lbs. Blackwater logo etched on receiver.

Pump chambered for 3" 12-gauge loads. Features protective heat shield on 20" barrel. Overall length 40.875". Has synthetic Speedfeed stock. Bead front sight. Tri-Rail fore-end, with removable side rails and integral bottom rail. Extended magazine gives an 8+1 capacity. Matte blue finish. Length of pull 13.8". Weight 7.25 lbs.

Magazine-fed variant, with 11-round capacity. Introduced in 2018.

Fitted with a 20" shrouded barrel, bayonet lug, Parkerized or blued finish, speed feed stock, and ghost ring sights, it was introduced in 1987 and weighs about 7.25 lbs. Add 16% for the optics-ready variant and 38% for the Magpul Holosun Micro Dot Combo.

Features adjustable aluminum stock and ghost ring sights. Heavy-walled barrel 20" long. Length of pull can be adjusted between 10.5" and 14.25". Weight 7.5 lbs. Capacity 8+1. Parkerized finish.

9-shot 12 gauge has a 20-inch heavy-walled, Cylinder bore barrel with a heat shield, bayonet lug and Ghost Ring sights. Parkerized finish; metal trigger assembly; metal safety button; full-length walnut stock and corncob forend.

18.5-inch (6-shot) cylinder bore, standoff barrel with matte-blue finish. Front red-fiber-optic bead sight. Synthetic stock and tri-rail corncob forend, both in KUIU Vias camouflage. Thunder Ranch logo is engraved on the right side of the receiver.

Compact variant of 590 series, with bird's-head pistol-grip and Cylinder choked 14" barrel. Available in 12-, 20-gauge or .410 bore. Includes features found on other 590 models: ambidextrous thumb safety, dual extractors, positive steel-to-steel lockup, twin action bars and an anti-jam elevator. Bureau of Alcohol, Tobacco, Firearms & Explosives has confirmed the 590 Shockwave as a "firearm" per the Gun Control Act (GCA), but not a Class 3/NFA firearm. This only speaks to its federal status. There could be local state laws that prohibit the sale of this gun in your state. Consult your State Police for clarification. As with any other pistol-grip firearm, the buyer must be 21 years of age and a resident of the state where it is purchased. MSRP $455. Introduced in 2017.

Gauge: 12 ga. 1.7–3 in. Barrel: 14.375 and 18.5 in. Length: 26.37–30.75 in. Weight: 5.3–5.5 lbs. Stock: Black synthetic with Raptor grip and corn-cob forend with strap. Features: The upgraded 590S version of the pistol grip Shockwave is built to cycle any length shells without adapter or adjustment, from 1.75 to 3-in. Bead front sight, matte blued metalwork, shorter-barreled model uses heavy-walled barrel. Both feature fixed cylinder bore choke.

Gauge: 12 ga. 3 in. with 1.75-in. short shell and 2.75 in. capability. Barrel: 18.5 or 20 in., matte blued. Length: 39.5–41 in. Weight: 6.75–7.25 lbs. Stock: Black Synthetic with fixed LOP; Model with Ghost ring sights uses tactical stock with M-LOK attachment points. Features: Standard model with 18.5-in. barrel allows capacities of 9+1, 6+1, or 5+1. Model with 20-in. barrel and ghost ring sights has capacities of 13+1, 8+1, or 7+1. The former uses a fixed cylinder bore. The latter features the Accu-Choke system with cylinder bore choke included. Both models cycle all length of shells without adapters or adjustment.

Gauges: 12-ga., 3”. Barrels: 20”, 18.5”, and 14” (Cyl. heavy-walled). Weight: 7 lbs. Introduced 2025. Enhanced assembly and quality control process with special finishes and features, including a refined loading port to help optimize performance. Other features: Ghost ring and front fiber-optic sights equipped with protective low-profile wings. Adapter plates provided for optics-ready receiver for mounting RMR, Docter, and Leupold footprints. Two stock options with spacer systems for customization. Magpul SGA variable length-of-pull (LOP) stock adjusts in .5” increments from 12.25”-14.25”. Compact stock features a one-inch insert for adjustment from 12”-13”. Enlarged ambidextrous safety. Mossberg is offering nine versions of the 590A1 in its Professional Series, including nine- and seven-shot versions with the option of Cerakote or Marinecote metal finishes; Compact stocks and Magpul-equipped models; a six-shot NFA/Class 3 offering; and options with orange furniture. Drilled and tapped receiver.

Gauges: 12-ga., 2.75”. Barrels: 18.5” (Cyl. heavy-walled). Introduced 2025. Enhanced assembly and quality control process with special finishes and features, including a refined loading port to help optimize performance. Other features: 590M compatible magazines in 5-, 10-, 15-, and 20-round capacities. Metal rear ghost ring and front fiber-optic sights equipped with protective low-profile wings. Optics-ready receiver (RMSc footprint). Two stock options with a spacer system for customization. Magpul SGA variable length-of-pull (LOP) stock adjusts in .5” increments from 12.25”-14.25”. Compact stock features a one-inch insert for adjustment from 12”-13”. Magpul MOE forend offers an extended length with front and rear hand stops and M-LOK slots. The Compact models feature a traditional corncob-style forend. Drilled and tapped receiver.

Gauges: 12-ga., 2.75”. Barrels: 11.5” (Cyl. heavy-walled) NFA item. Introduced 2025. Enhanced assembly and quality control process with special finishes and features, including a refined loading port to help optimize performance. Other features: One-piece construction of the stand-off barrel, machined integrally to the barrel. Mossberg’s Aftershock bird’s head grip. 590M compatible magazines in 5-, 10-, 15-, and 20-round capacities.

Gauges: 12-ga., 2.75” Barrels: 18.5”. Capacity: 8 rounds. Introduced 2025. Features: Corrosion-resistant internal parts and finishes, including nickel boron-coated gas piston, magazine tube, hammer, and sear. The receiver, barrel, and magazine tube feature a Cerakote Tungsten finish. An optics-ready receiver for direct mounting of micro-dot optics; drilled and tapped receiver; enlarged and beveled loading port; elongated, pinch-free elevator; bright orange anodized follower; and extended magazine tube. The synthetic stock is self-draining and has a user-adjustable length-of-pull with a range of 12.5”-14.25” with the use of inserts. Further adjustability is provided for drop at comb and cast with the use of incremental stock shims and the grip area features aggressive texturing. The forend features an integrated heat shield, two QD cups, and three M-LOK mounting slots (3, 6, and 9 o’clock positions). A stabilizing barrel clamp with two-sided M-LOK mounting slots and swivel studs. Two QD mounting cups on the stock (right and left) allow the sling mount to be positioned in 90-degree increments (3, 6, and 9 o’clock positions). A rear ghost ring and front fiber-optic sights with protective, low-profile wings for ease of racking/unracking in cruisers. Remove the Ghost Ring sight and the receiver is optics ready for the direct mounting of micro-dot sights. Adapter plates are provided for the optics-ready receiver for mounting RMR, Docter, and Leupold footprints. A redesigned, durable, and oversized fire control system with metal triggerguard, knurled charging handle, and ergonomic bolt release with quick-empty unloading feature. Redesigned, oversized ambidextrous safety. Redesigned one-piece magazine tube for ease of maintenance and improved reliability. The magazine spring is retained for ease of removing and attaching the barrel. A detachable sleeve protects the magazine tube and secures the forend.