New For 2025: Mossberg 590M Standoff & 500 Slugster Pump Shotguns

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posted on April 20, 2025
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Bald bearded man wearing sunglasses firing in hand new Mossberg pump-action shotgun right-side view with detachable box magazine outdoors
Images courtesy of Mossberg.

The Mossberg 500 is one of the most popular pump-action shotguns ever made. That doesn’t keep the company from making updates and improvements, as evidenced in the new-for-2025 590M Standoff and 500 Slugster series.

Mossberg 590M Standoff pump-action 12 gauge with detachable box magazine birdshead grip short barrel with standoff device at muzzle
The 590M Standoff is essentially a magazine-fed Shockwave with a newly designed barrel with integral standoff device.

The Mossberg 590M Standoff combines the features of Mossberg’s Shockwave series and its 590 box-magazine fed pump shotguns. Chambered in 12 gauge with a 2 3/4” chamber, it has all of the features of the 590 series, including a heavy-walled barrel, dual extractors, steel-to-steel lockup, top-mounted ambidextrous safety and twin action bars. It uses detachable box magazines available in capacities of 5, 10, 15, or 20 rounds that are released by a push button in front of the trigger guard. One 10-round magazine is supplied.

Mossberg 590M detachable box magazine closeup two images showing magazine release button and use of with finger
Standard 590M features include a detachable box magazine that is released by a button positioned in front of the trigger guard.

The Standoff differs in several keys ways over the 590M Shockwave introduced in 2018. Its 14.25” barrel has a cylinder bore and a standoff muzzle device machined integral to the barrel. A bead front sight is mounted on the barrel and the receiver is drilled and tapped for adding optics. A Shockwave-type firearm, the Standoff uses Mossberg’s Aftershock bird's head grip, designed to minimize recoil while providing a firm purchase on the firearm. The pump-action fore-end has a handstop, as well as M-Lok slots for mounting accessories. With an overall length of 27” and a weight of 6.6 lbs., the Mossberg 590M Standoff has an MSRP of $1,050.

Mossberg 500 Slugsters three pump-action shotguns with text callouts for models right-side view shown on white background
Mossberg’s 500 Slugsters are purpose-built slug hunting shotguns.

Many hunters, through personal preference or due to local regulations, still take to their deer stands with an iron-sighted shotgun loaded with slugs. For these hunters, Mossberg is making the 500 Slugster. Available chambered in 12 gauge, 20 gauge or .410 bore, all Slugsters have 3” chambers with a five-shot capacity in their underbarrel tubular magazine. Rifle-type sights, adjustable for windage and elevation, are mounted on the barrel and the receiver is drilled and tapped for mounting optics.

To top off the no-frills pack, Slugsters have black synthetic furniture, a matte blue metal finish, and sling swivel studs. The models chambered in 12 or 20-gauge versions have a 24” fully rifled barrel with a 1:36 twist rate. The .410 bore model has a 20” smoothbore barrel with a cylinder bore and a “Bantam”-sized buttstock with a 13” length-of-pull for hunters of a smaller stature. Mossberg’s 500 Slugster shotguns have an MSRP of $533, regardless of chambering.   

Mossberg 500 Slugster details closeups arrangement of three images illustrating safety selector and rear sight on barrel of gun
Slugster features include an ambidextrous safety and fully adjustable, rifle-type sights.

For more information, see the company’s 590M Standoff and 500 Slugster websites.

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