Last updated September 5, 2026 · By Nick Hall. New to the platform? Start with our Mossberg 500 review.
The Mossberg 500 has one of the deepest parts catalogs in shotguns, and that is exactly the problem. Retailers file 500 parts, 590 parts and Maverick 88 parts under one Mossberg heading, so it is easy to order something that will not go on your gun. The most common casualty is the upgrade nearly every guide tells you to buy first.
Below are the parts I would actually put on a home-defense 500, in the order I would buy them, with what each one fits and what it costs right now. I have flagged the two popular upgrades that do not fit a plain 500 at all, because knowing that before you order is worth more than any of the picks.
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Quick Answer: Buy a light first, then a shell carrier, then sights. A Streamlight TL-Racker puts 1,000 lumens in the forend, a Mesa Tactical SureShell adds six rounds on the receiver, and ghost rings make the gun precise with slugs. The Magpul SGA stock is the best single ergonomic upgrade. Two things to know before you order: a Mossberg 500 cannot take a magazine extension, and the Magpul MOE forend is a 590 part, not a 500 part.
| Upgrade | Why it makes the list | Check price |
|---|---|---|
| Buy FirstStreamlight TL-Racker | A 1,000-lumen light built into the forend, so there is no separate mount or pressure switch to shake loose. |
Check Price ↓ |
| Capacity FixMesa Tactical SureShell | Six rounds on the receiver. On a 500 this is how you carry more shells, because the magazine tube cannot be extended. |
Check Price ↓ |
| Best ErgonomicsMagpul SGA Stock | Adjustable length of pull and a raised comb. The single biggest change to how the gun mounts and shoots. |
Check Price ↓ |
| Best SightsGhost ring sight set | Turns a bead-sighted shotgun into something you can place a slug with out to 75 yards. |
Check Price ↓ |
| Cheapest WinPicatinny receiver rail | Ten dollars and a screwdriver puts a red dot on the gun. The receiver is already drilled for it. |
Check Price ↓ |
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. Where we have not shot a specific variant ourselves, we say so in that section.
Read This Before You Order Anything
Almost every Mossberg 500 upgrade list opens with a magazine extension. On a plain 500 that part does not exist, and the reason is in the gun’s design rather than in the aftermarket.
The 500’s magazine tube is closed at the muzzle end, and the barrel is held on by a bolt that threads into that closed end. The 590’s tube is open at the front and the barrel is retained by a separate cap nut, which is what leaves room for an extension to screw on. Same family, completely different front end.
Nordic Components, who make the MXT extension that these lists recommend, say it plainly in their own fit guide: “Due to the design of the barrel lug and the magazine cap interface, the Mossberg 500/535 and Maverick 88 cannot accept a magazine extension.” If you own a 500 and you want more rounds on the gun, a side saddle is the answer, not a tube.
The second trap is quieter. Magpul’s MOE M-LOK forend, part MAG494, is one of the most recommended Mossberg parts on the internet, and Magpul lists it as “Compatible with Mossberg 590/590A1 12ga shotguns” with a footnote that it is “not compatible with 14″ 590 Shockwave, 500, 535, Maverick 88, and AOW models.” The 500 is on the excluded list. Magpul’s SGA stock, by contrast, is a genuine drop-in for the 500, the 590, the 590A1 and the Maverick 88, which is why it leads the list below.
1. Streamlight TL-Racker: Buy This First
- Output: 1,000 lumens
- Type: Integrated forend, replaces the factory forend
- Fits: Mossberg 500 and 590, part 69600 in black
- Battery: CR123A
- Street price: Around $132 to $168
| Capability gained | 5 / 5 |
| Ease of install | 5 / 5 |
| Durability | 4 / 5 |
| Value | 3 / 5 |
| Ergonomics | 4 / 5 |
Pros
- No separate mount or pressure switch
- Ambidextrous switches under both thumbs
- Drops straight on, no gunsmithing
Cons
- Costs more than a clamp-on light
- CR123A cells, not rechargeable
- Separate part numbers per shotgun
A defensive shotgun without a light is a gun you cannot responsibly fire in your own house at two in the morning. Identifying what you are pointing at is not optional, and it is the first thing I would spend money on.
The TL-Racker is the cleanest way to do it on a Mossberg. It replaces the whole forend, so the light is part of the gun rather than something bolted to it. There is no rail section, no remote switch and no pressure pad taped to the pump, which is where most shotgun light setups eventually fail. The switches sit at the front on both sides, so your support thumb finds one whichever hand is forward.
Order carefully. Streamlight makes the TL-Racker in separate versions for the Mossberg 500/590, the Mossberg Shockwave and the Remington 870, and they are not interchangeable. The Mossberg 500/590 version is 69600 in black or 69610 in orange, and I have filtered the other guns out of the card above.
Best For: Any 500 that lives loaded for home defense. If you buy one part off this page, buy this one.
2. Mesa Tactical SureShell: The 500’s Answer to Capacity
- Capacity: 6 shells, 4-shell versions also made
- Mount: Bolts to the receiver, uses existing holes
- Fits: Mossberg 500, part 94750 for the 6-shell aluminum carrier
- Material: Aluminum or polymer depending on version
- Street price: Around $63 to $70
| Capability gained | 5 / 5 |
| Build quality | 5 / 5 |
| Ease of install | 4 / 5 |
| Value | 4 / 5 |
| Added weight | 3 / 5 |
Pros
- Six spare rounds on the gun
- The only capacity upgrade a 500 takes
- Some versions double as an optic rail
Cons
- Adds noticeable weight high up
- Shells can rattle when running
- Needs the receiver holes tapped
This is the pick that changes because of the fitment section above. On a 590 you would buy capacity by extending the magazine. On a 500 the tube is a closed unit, so the shells have to live somewhere else, and the receiver is the best place for them.
Mesa Tactical is the standard here for a simple reason: their carriers are machined and bolted rather than glued or strapped, and they survive being run hard. Cheaper side saddles work loose, and a shell carrier that shifts under recoil is worse than no shell carrier because it fouls your reload.
Six extra shells roughly doubles what a defensive 500 has on board, and it puts them where your support hand can reach without leaving the gun. The trade is weight, and it is real: a loaded six-shell aluminum carrier is noticeable when you mount the gun. If that bothers you, the four-shell version is the compromise.
Best For: Mossberg 500 owners who want more rounds available and have just discovered they cannot fit an extension.
3. Magpul SGA Stock: The Biggest Change to How It Shoots
- Part number: MAG490
- Length of pull: Adjustable with spacers
- Fits: Mossberg 500, 590, 590A1 and Maverick 88
- Sling points: Multiple, including a receiver mount option
- Street price: Around $85 to $115
| Fit and control | 5 / 5 |
| Cheek weld for optics | 5 / 5 |
| Ease of install | 5 / 5 |
| Value | 3 / 5 |
| Recoil comfort | 4 / 5 |
Pros
- Length of pull actually adjusts
- Raised comb suits a red dot
- Fits the Maverick 88 as well
Cons
- Dearer than most shotgun stocks
- Spacers sold in a separate kit
- Stiffer than the factory recoil pad
The factory Mossberg stock is too long for most people wearing anything heavier than a t-shirt, and the comb is too low to see through a red dot. The SGA fixes both, and that is why it is worth more than the sum of its features.
Length of pull is the one that surprises people. Shortening it by half an inch or so lets you mount the gun cleanly in a jacket, and a shotgun that mounts cleanly is a shotgun you hit with. The raised comb then puts your eye where a receiver-mounted optic already is, instead of asking you to float your head above the stock.
Magpul lists it as a drop-in for the 500, the 590, the 590A1 and the Maverick 88, which makes it the rare Mossberg part with no fitment homework attached. Installation is one bolt down the middle of the stock and a long screwdriver.
One honest note: the SGA recoil pad is firmer than the squishy factory item. With buckshot in a light gun some people prefer the old pad, and there is a Magpul enhanced pad if you want the fit without the firmness.
Best For: Anyone whose 500 does not quite fit them, and anyone mounting a red dot.
4. Ghost Ring Sights: Precision With Slugs
- Type: Aperture rear, post or dot front
- Options: Mossberg factory kit, XS Shotrail, TacStar saddle sight
- Fits: Mossberg 500 and 590
- Tritium: Available on the XS sets
- Street price: Around $40 for a front sight, $90 to $155 for a set
| Precision with slugs | 5 / 5 |
| Speed up close | 4 / 5 |
| Durability | 5 / 5 |
| Value | 3 / 5 |
| Ease of install | 3 / 5 |
Pros
- Makes slugs genuinely accurate
- Nothing to switch on or charge
- Tritium options for low light
Cons
- Slower than a red dot
- Some sets need drilling
- Aperture blocks a little vision
A bare front bead is fine for buckshot at across-the-room distance and hopeless for anything else. Put a slug in a 500 and it will hold a useful group well past 50 yards, but only if you have something to aim with.
Ghost rings are the traditional answer and they still work. The rear aperture is large enough that your eye centers the front post without conscious effort, so it is quicker than it looks, and unlike an optic there is no battery, no lens to fog and nothing to switch on when you are half awake.
Watch what you are actually buying. The listings mix complete sets, rear-only units and front sights sold on their own, and the cheapest row in the card is often a front sight rather than a pair. Mossberg’s own 95300 kit for the 500/590 is the simple choice. The XS Shotrail sets cost more and add a rail so you can run an optic and irons together.
Best For: A 500 that will ever fire a slug, and anyone who wants a sighting system that works with no power.
5. Picatinny Receiver Rail: Ten Dollars, Big Change
- Mount: Screws to the pre-drilled receiver
- Fits: Mossberg 500 and 590, not the Maverick 88
- Makers: Mossberg, UTG, NcSTAR, EGW, Leupold
- Tools: A screwdriver and thread locker
- Street price: Around $10 to $53
| Value | 5 / 5 |
| Capability unlocked | 5 / 5 |
| Ease of install | 5 / 5 |
| Return to zero | 3 / 5 |
| Height over bore | 3 / 5 |
Pros
- Cheapest real upgrade on the gun
- Receiver is already drilled
- Opens up red dot options
Cons
- Sits the optic fairly high
- Cheap rails use soft screws
- Maverick 88 receivers are not drilled
Current Mossberg receivers come from the factory already drilled and tapped for a top rail, which is the sort of detail that makes the platform cheap to build on. A rail costs about ten dollars at the budget end and turns the gun into a red dot host.
A dot on a defensive shotgun is a genuine upgrade rather than a fashion. You shoot with both eyes open, the dot goes where the gun is pointed regardless of how your head is positioned, and that matters when you are shooting from an awkward position in the dark rather than from a square stance on a range.
Spend a little more than the minimum. The ten dollar rails work but come with soft screws that strip if you are firm with them, and buckshot recoil is hard on a mount. Use thread locker whatever you buy, and if you want the optic sitting low and solid the EGW and Leupold mounts are the ones worth the extra.
The Maverick 88 is the exception in the family here. Its receiver is not drilled from the factory, so a rail means a gunsmith rather than a screwdriver.
Best For: Anyone who wants a red dot, and the best value on this entire page.
6. Hogue OverMolded Forend: The 500’s Forend Upgrade
- Material: Rubber overmoulded on a rigid core
- Fits: Mossberg 500 and 590
- Colors: Black and OD green
- Also sold: As a stock and forend set
- Street price: Around $25 to $34
| Grip in the wet | 5 / 5 |
| Fits the 500 | 5 / 5 |
| Value | 5 / 5 |
| Accessory mounting | 2 / 5 |
| Looks | 3 / 5 |
Pros
- Actually listed for the 500
- Grippy with wet or gloved hands
- Cheap for what it changes
Cons
- No M-LOK slots for a light
- Rubber picks up lint
- Bulkier than the factory forend
This is the forend the fitment section pushed us to. Magpul’s MOE is the one everybody names, and Magpul themselves exclude the 500 from it, so on a 500 the sensible upgrade is the Hogue.
The rubber overmoulding is the point. A slick polymer forend is fine dry and unhelpful with cold, wet or gloved hands, and the pump stroke is the one part of running a shotgun where a slipped grip actually costs you. The Hogue is grippy without being abrasive against clothing.
What you give up is mounting. There are no M-LOK slots, so if a light on the forend is the plan then the TL-Racker further up this page already solves that in one part and you can skip this one entirely. The two are alternatives, not companions.
Best For: A 500 that wants a better grip and is not getting a forend light.
7. Magpul MS1 Sling
- Type: Two-point, quick-adjust
- Part number: MAG513
- Webbing: 1.25 inch nylon, padded versions available
- Attachment: Needs sling mounts, the SGA stock provides them
- Street price: Around $28 to $43
| Retention | 5 / 5 |
| Adjustment speed | 5 / 5 |
| Value | 4 / 5 |
| Comfort loaded | 3 / 5 |
| Ease of setup | 3 / 5 |
Pros
- Adjusts from slack to tight instantly
- Frees your hands without grounding the gun
- Cheap for the capability
Cons
- Mounts sold separately
- Unpadded version bites when loaded
- Another thing to snag on doorframes
A sling is not tactical decoration, it is how you keep hold of a long gun while doing something else with your hands. Open a door, carry a child, hold a phone, and the shotgun stays on you instead of leaning against a wall where you left it.
The MS1 is the default because the quick-adjust tab actually works with one hand. Pull it and the sling cinches tight to your body, feed it back and the gun swings free to shoot. Cheaper slings without that feature end up permanently set to one length, which is the length that suits neither carrying nor shooting.
Budget for mounts. Slings and sling attachment points are sold separately, and on a Mossberg the tidy answer is the SGA stock’s built-in points at the rear and a magazine cap or clamp mount at the front.
Best For: Any shotgun that leaves the bedroom, and any build that already has the SGA stock on it.
8. Magazine Extension: For 590 Owners Only
- Maker: Nordic Components MXT
- Fits: Mossberg 590 and 590A1
- Does not fit: Mossberg 500, 535 or Maverick 88
- Adds: Two or more rounds depending on length
- Street price: Around $66 to $71 for a kit
| Capacity gained | 5 / 5 |
| Build quality | 5 / 5 |
| Fits a 500 | 0 / 5 |
| Value | 3 / 5 |
| Balance | 3 / 5 |
Pros
- Real capacity, not carried spares
- Nordic tubes are the quality standard
- Clamp options add a rail
Cons
- Will not fit a 500 at all
- Match the length to your barrel
- Adds weight at the muzzle
I have kept this on the page rather than deleting it, because half the people reading a Mossberg parts guide own a 590 and the other half have just been told their 500 cannot have one. Both need to know where the line is.
On a 590 or 590A1 this is the upgrade with the biggest effect on what the gun can do. Nordic’s MXT tubes are machined properly, the extension nut is a known quantity and the barrel clamp options let you hang a rail off the front if you want one. Match the extension length to your barrel so the tube does not stick out past the muzzle, which looks bad and does nothing useful.
One buying warning that applies to everyone. Search for a Mossberg magazine extension and the results fill up with end caps, barrel clamps and follower kits, all of which are cheaper than the extension itself and none of which is the extension. If a listing looks like a bargain against everything around it, read the product name properly before you click buy.
Best For: Mossberg 590 and 590A1 owners. If you have a 500, buy the SureShell carrier further up instead.
How to Prioritize Your Mossberg 500 Build
Spend in the order that adds the most capability per dollar:
- A light. Target identification is the one thing a defensive shotgun cannot do without, and it is not negotiable.
- A receiver rail, if you want a dot. Ten dollars, and the receiver is already drilled for it.
- Sights or an optic. Ghost rings if you want no batteries, a red dot if you want speed.
- A shell carrier. On a 500 this is your capacity upgrade, so it matters more here than on a 590.
- Stock and forend. Fit and control, once the gun can do its job.
- A sling. Cheap, and the last piece that turns parts into a setup.
Two things I would not spend money on early: a pistol-grip-only stock, which makes the gun harder to shoot well for no gain in a house, and a heat shield, which looks the part and does nothing you will ever need. Put that money toward the light.
Want the background on the gun first? Read our Mossberg 500 review and the Mossberg 500 vs 590 comparison, which covers the tube difference in more detail, then the classic Remington 870 vs Mossberg 500. You can also see the platform in our best pump-action shotguns and best home-defense shotgun under $500 guides.
Frequently Asked Questions
What is the best upgrade for a Mossberg 500?
A weapon light, because you cannot defend against a threat you cannot identify. After that, a side saddle shell carrier, then sights or a red dot on the receiver rail. Note that capacity on a 500 comes from a shell carrier rather than a magazine extension, because the 500 cannot accept one.
Can you put a magazine extension on a Mossberg 500?
No. Nordic Components, who make the MXT extension, state in their own fit guide that "due to the design of the barrel lug and the magazine cap interface, the Mossberg 500/535 and Maverick 88 cannot accept a magazine extension." The 500 magazine tube is closed at the muzzle end and the barrel bolts into it, while the 590 tube is open and uses a separate cap nut, which is what leaves room for an extension. To carry more rounds on a 500, fit a side saddle shell carrier.
Does the Magpul MOE forend fit a Mossberg 500?
No. Magpul lists the MOE M-LOK forend, part MAG494, as compatible with Mossberg 590/590A1 12ga shotguns, and notes it is not compatible with the 14 inch 590 Shockwave, 500, 535, Maverick 88 and AOW models. For a 500, the Hogue OverMolded forend is listed to fit, or the Streamlight TL-Racker if you want a light built into the forend.
Do Mossberg 500 and 590 parts interchange?
Some do and some do not. Stocks, shell carriers, receiver rails and sights are largely shared, and the Magpul SGA stock is listed for the 500, 590, 590A1 and Maverick 88. Anything that touches the magazine tube or the front of the gun is where they diverge, so magazine extensions and several forends are model-specific. Check the fitment line on the listing rather than the Mossberg heading it is filed under.
Do Mossberg 500 parts fit a Maverick 88?
Partly. The Maverick 88 shares much of the 500 receiver but uses a crossbolt safety in the trigger guard instead of the tang safety, and its receiver is not drilled for an optic rail from the factory. Magpul does list the SGA stock as fitting the Maverick 88, and Mesa Tactical make a SureShell carrier for it, but it cannot take a magazine extension and a receiver rail means gunsmithing.
Do you need a gunsmith to upgrade a Mossberg 500?
Rarely. Stocks, forends, lights, shell carriers, receiver rails and slings all bolt on at home with basic tools, and the tang safety and easy takedown make maintenance simple. A gunsmith is only needed for barrel work, or for drilling a Maverick 88 receiver that did not come tapped for a rail.
Will Remington 870 parts fit a Mossberg 500?
No. The Mossberg 500 and Remington 870 are different platforms with different receivers, stock threads, forend designs and magazine tubes, so parts do not interchange. Streamlight even make separate TL-Racker versions for each. Always buy parts listed specifically for the Mossberg 500, and confirm gauge and barrel length.
Can you put a red dot on a Mossberg 500?
Yes. Current Mossberg receivers come drilled and tapped for a Picatinny top rail, so a rail costs around ten dollars and goes on with a screwdriver. Mount a shotgun-rated red dot and use thread locker, because buckshot recoil is hard on a mount. The Maverick 88 is the exception, as its receiver is not drilled from the factory.
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