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- Treat every gun as loaded
- Point the muzzle in a safe direction
- Keep your finger off the trigger until you’re ready to shoot
- Know your target and what’s beyond
Table of Contents
How we tested: Every pick here is ranked against our testing methodology. Minimum round counts, accuracy and reliability protocols, the failures that disqualify a gun.
Review: Mossberg 590M, Ten Shells in a Box Magazine
Our Rating: 7.5/10
- Street Price: Our live card starts at $546.99 for a new 590M Mag-Fed at Guns.com on October 2, 2026 (Use our live pricing for the best up to date deal)
- Gauge: 12 gauge, 2.75 in. chamber only
- Action: Pump action, detachable box magazine
- Barrel Length: 18.5 in., heavy-walled, matte blue
- Choke: Cylinder bore
- Capacity: 10+1 with the factory magazine; Mossberg also listed 5, 15 and 20 round magazines
- Overall Length: 39.5 in.
- Length of Pull: 13.87 in., fixed
- Weight: 7.75 lb
- Stock Material: Black synthetic
- Sights: Bead (50205) or ghost ring (50206)
Pros
- Ten shells and fast magazine changes
- Same 590 pump action underneath
- Cheaper than the new 590RM
Cons
- Takes 2.75 inch shells only
- Long magazine gets in the way
- Heavy at 7.75 pounds
Quick Take
The Mossberg 590M is a 590 pump shotgun that feeds from a detachable box magazine instead of a tube. The standard magazine holds ten 2.75 in. shells, and a reload is a magazine swap rather than feeding shells one at a time.
I shot 600 shells through a 590M Mag-Fed 50205 with two 10-round magazines and a 5-rounder. It had two feeding hiccups, both with light target loads in a fully loaded new magazine, and none after. It shot slugs into 3.2 in. at 50 yards on a bead.
Mossberg’s site has also moved on. Its current mag-fed shotgun is the 590RM, and the original 590M Mag-Fed product pages no longer load on Mossberg’s site. New 590Ms are still in stores, and they cost a lot less than the 590RM. That’s the reason to buy one now.
Best For: Home and ranch defense buyers who want ten shells on board and fast reloads, and range shooters who enjoy a mag-fed pump. Not for anyone who wants 3 in. magnums or a light, handy shotgun.
590M, 590M Pro or 590RM: What Mossberg Sells Now
Mossberg’s own site makes this confusing. An archived copy of the 590M Mag-Fed page from 2022 has the specs used in this review. In a March 2026 capture, the 50206 ghost ring page returns Mossberg’s “Page Not Found.” The mag-fed guns Mossberg still shows are the 590M Stand-Off and the newer 590RM.
| Model | Barrel | Length | Weight | Stock and Controls | Street, October 2, 2026 |
| 590M Mag-Fed (50205) | 18.5 in., bead | 39.5 in. | 7.75 lb | Fixed synthetic stock | $546.99 |
| 590M Stand-Off (50217) | 14.375 in., stand-off muzzle | 27 in. | 6.3 lb | Bird’s head grip | $777.01 |
| 590RM Mag-Fed (50213) | 18.5 in., heat shield, Accu-Choke | 36.9 in. | 8 lb | 5-position stock, rotary safety, Magpul MBUS 3 | $819.99 |
The 590RM is a different shotgun with the same idea. Mossberg’s page lists it at $1,085 with an integrated heat shield, an Accu-Choke barrel, a five-position stock with 12 to 15.25 in. of pull, a flat trigger and an ambidextrous rotary safety. It weighs 8 lb and holds 10+1. In stores it ran about $270 more than a plain 590M.
Every model here is a 2.75 in. gun. Mossberg lists the 590M and the 590RM with 2.75 in. chambers, while the tube-fed 590A1 and 590R take 3 in. shells. If you want magnums, the magazine isn’t for you.
Design Intent: Why Mossberg Built It This Way
A tube-fed pump shotgun is slow to reload: one shell at a time, through the bottom of the receiver. The 590M keeps the 590’s pump action and trigger group and moves the ammunition into a box magazine that hangs in front of the trigger guard. Ten shells go in at once and come out with one button.
Mossberg built the magazines for it, and its old site listed them in 5, 10, 15 and 20 round sizes. The shorter ones matter. A 10-round magazine sticks well below the stock, so for shooting from a bench or prone, the 5-rounder is the one you’ll reach for.
Mossberg 590M Variants
590M Mag-Fed (50205): 18.5 in. heavy-walled barrel, bead sight, black synthetic stock, 10+1, 7.75 lb $546.99 at Guns.com
590M ghost ring (50206): the same gun with ghost ring sights and a barrel heat shield $602.09 at Classic Firearms
590M Pro (50219 to 50222): Tungsten Gray Cerakote, ghost ring sights, Magpul SGA stock on some models, per dealer listings $789.99 at Sportsman's Warehouse
590M Stand-Off (50217): 14.375 in. barrel, bird's head grip, 27 in. overall, 6.3 lb $1,078 on Mossberg's page
The 590M Shockwave (50208) is the short-barrel, bird’s head grip version, and Palmetto State Armory had it at $576.99, only $30 more than the standard gun. The Pro models are where the price jumps. Sportsman’s Warehouse had a Tungsten Gray 590M at $789.99, and dealer listings show ghost ring sights and Magpul SGA stocks on some of them.
Competitor Comparison
The 590M’s real competition is the rest of the 590 family: tube-fed guns that cost about the same and take 3 in. shells, and the newer mag-fed 590RM.
Mossberg 590A1 ($579.99 to $619.99)
The tube-fed military 590. Palmetto State Armory had an 18.5 in. 590A1 at $599.99, $53 more than the 590M, holding 6+1 with a 3 in. chamber. It’s lighter, slimmer and handles better. It also reloads one shell at a time. Our Mossberg 590A1 review has the details.
Mossberg 590R ($708.90 to $829.99)
The modern tube gun, with the rotary safety, flat trigger and adjustable stock that the 590RM borrows. Sportsman’s Warehouse had it at $829.99. It holds 6+1 of 3 in. shells and weighs 7.1 lb. Read our Mossberg 590R review.
Mossberg 590RM ($819.99 to $841.99)
The 590M’s replacement on Mossberg’s site, with the 590R’s controls and stock. Palmetto State Armory had the 590RM Stand-Off at $841.99, $295 more than the 590M. If you want a mag-fed Mossberg with current parts and support, this is it.
Verdict: The 590M is the cheapest way into a mag-fed Mossberg, and it’s priced like a 590A1. Pick it for the magazine. Pick a tube gun if you want 3 in. shells or a lighter, slimmer shotgun. For more, see our 590 parts and accessories and the 590 vs 590A1 comparison.
Testing Protocol
We shot one gun, a 590M Mag-Fed 50205, for 600 shells over four sessions in September, from 61°F to 88°F, with two 10-round magazines and one 5-round magazine.
Ammunition Log
- Birdshot, 300 shells: Winchester Super Target 2.75 in. #8 (200), Federal Top Gun 2.75 in. #7.5 (100)
- Buckshot, 200 shells: Federal Tactical 00 buck with FliteControl (100), Winchester Ranger reduced recoil 00 buck (50), Hornady Critical Defense 00 buck (50)
- Slugs, 100 shells: Federal TruBall 1 oz rifled slugs
Phase 1: Break-In
New magazines are stiff. Loading the tenth shell took real thumb pressure, and seating a full magazine on a closed bolt took a firm slap. I loaded the magazines and left them overnight before the first session, which helped.
Phase 2: Reliability
Every shell fired. In the first 100, I had two failures to feed, both with light #8 target loads near the bottom of a full 10-round magazine: the shell tipped nose-down and I had to clear it. Neither happened again after the springs settled, and neither happened with buckshot or slugs. I short-stroked the pump once myself, which the 590M punishes the same way any pump does.
Phase 3: Accuracy
From a rest at 50 yards with the bead, Federal TruBall slugs averaged 3.2 in. for five shots. At 15 yards, Federal Tactical 00 buck kept all eight pellets in about 4 in. through the cylinder bore. Reduced recoil buckshot opened to about 7 in.
Tracking & Observations
After 600 shells the action was dirty and smooth. The magazine catch showed bright wear where the magazines lock in, and the magazine feed lips had scuffs but no cracks. Reloads are the whole point, and they’re fast once you learn to rock the magazine in front first.
What This Means for You
- Reliability: Run each new magazine before you trust it. Ours settled after the first box.
- Ammo Preference: Full-power 2.75 in. buckshot and slugs fed best.
- Accuracy Expectation: About 3 in. at 50 yards with slugs on the bead.
- Maintenance: Keep the magazines clean and check the feed lips.
- Upgrade Impact: Spare magazines are worth more than any part.
Performance Testing Results
Reliability (8/10)
Every shell fired. Two early feeding stoppages with light target loads cost it points.
Accuracy (7/10)
Fine for a cylinder bore defensive shotgun with a bead. Ghost ring sights on the 50206 would help with slugs.
Ergonomics & Recoil (6/10)
The weight soaks up recoil. The long magazine gets in the way on a bench and when shooting prone, and a loaded 10-rounder makes the gun front-heavy.
Fit, Finish, and Quality Control (7/10)
Standard Mossberg: a durable matte finish, a slightly loose forend and an action that gets smoother with use.
Value (8/10)
At $546.99 it’s priced like a 590A1 and about $270 under a 590RM, and it comes with a 10-round magazine.
Features (8/10)
Box magazine feeding, a heavy-walled barrel and four magazine sizes. No 3 in. chamber, no adjustable stock on the standard model.
Technical Deep Dive
Action and Receiver
A 590 pump action with a magazine well in front of the trigger guard. The left side of the receiver is marked MOSSBERG and 590M.
Barrel and Choke
An 18.5 in. heavy-walled barrel in matte blue with a cylinder bore choke and a 2.75 in. chamber, per Mossberg’s 2022 spec page.
Magazines
| Magazine | Mossberg Part | Best Use |
| 5 round | 95137 | Bench, prone and hunting |
| 10 round | 95138 | The standard home defense load |
| 15 round | 95139 | Range fun and competition |
| 20 round | 95140 | Range fun, and it’s long |
Parts, Accessories and Upgrades
| Upgrade Category | Recommended Component | Why It Matters | Cost Estimate |
| Magazines | Spare Mossberg 590M magazines, including a 5-rounder | Reloads and a shorter profile | $40 to $70 each |
| Light | A forend or barrel-clamp weapon light | A home defense shotgun needs one | $80 to $250 |
| Sling | A two-point sling | It’s a heavy gun to carry | $25 to $60 |
| Magazine pouch | A pouch sized for long shotgun magazines | Keeps a reload on you | $25 to $50 |
Common Problems & Solutions
- Failure to feed from a full new magazine: Load it and let it sit, and run a box of full-power shells through it before trusting it.
- Magazine won’t seat on a closed action: Rock it in front first, then slap the back. New springs make it stiff.
- 3 in. shells: Don’t. The chamber is 2.75 in.
- Magazine in the way on a bench: Use the 5-round magazine for bench and prone work.
- Short-stroking: Run the pump all the way back and forward. Same as any pump.
Who Should NOT Buy This Gun
The 590M does one thing very well. Some buyers want something else.
- Anyone who wants 3 in. magnums: The Mossberg 590A1 takes them and costs about the same.
- Buyers who want current controls and an adjustable stock: The Mossberg 590RM has both.
- People who want a lighter, slimmer shotgun: The Mossberg 590R weighs 7.1 lb with no magazine hanging down.
Final Verdict
The Mossberg 590M fired all 600 shells, had two early feeding stoppages with light loads, and reloads faster than any tube-fed pump. It’s heavy, the magazine gets in the way, and it only takes 2.75 in. shells.
Mossberg has moved on to the 590RM, which leaves the 590M as the cheap mag-fed Mossberg while stores still have it. At $546.99 with a 10-round magazine, that’s a good deal. For more Mossberg shotguns, see our 590 Shockwave review and 590S review.
Final Score: 7.5/10. A fast-reloading pump at a tube-gun price, while it lasts.
FAQ: Mossberg 590M
Is the Mossberg 590M reliable?
Ours fired 600 shells with two early failures to feed, both with light target loads in a new, fully loaded magazine. Buckshot and slugs fed every time.
How many shells does the Mossberg 590M hold?
The standard magazine holds 10 shells plus one in the chamber. Mossberg also listed 5, 15 and 20 round magazines.
Can the Mossberg 590M shoot 3 inch shells?
No. Mossberg lists the 590M with a 2.75 in. chamber. The tube-fed 590A1 and 590R take 3 in. shells.
How much does a Mossberg 590M cost?
On October 2, 2026, a new 590M Mag-Fed was $546.99 at Guns.com. The 590M Pro models ran about $790 and up.
Is the Mossberg 590M discontinued?
Mossberg's 590M Mag-Fed pages no longer load, and its current mag-fed model is the 590RM. New 590Ms were still for sale at dealers on October 2, 2026.
What is the difference between the 590M and the 590RM?
The 590RM adds a rotary safety, a flat trigger, an adjustable stock and a heat shield, and Mossberg lists it at $1,085. Both hold 10+1 with 2.75 in. chambers.
How much does the Mossberg 590M weigh?
Mossberg lists the 590M Mag-Fed at 7.75 lb with an 18.5 in. barrel and a 39.5 in. overall length.
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