AR 15 Magazines for Sale

AR-15 Magazines built to feed without fail belong in every serious rifle build, and the catalog at AR15Parts.com keeps a deep bench across every common chambering. From standard 5.56 NATO and .223 Wylde to specialty rounds like .458 SOCOM and 6mm ARC, each magazine in our inventory has been vetted for reliable feeding before it earns shelf space.

Browse the Full AR-15 Magazines Catalog

Shoppers wanting to narrow the search by cartridge can jump directly into a caliber-specific magazine sub-category using the alphabetized list further down this page.

Capacity Options: 10, 20, 30, and 40 Round AR15 Magazines

Capacity selection comes down to how the rifle will be used, and we keep every common option in stock. The 30-round magazine remains the default choice for general range work, training, and home defense because almost every chest rig, dump pouch, and mag carrier on the market is built around its dimensions. Twenty-round bodies sit lower in the receiver, which suits bench shooting, prone work, and any setup where ground clearance matters. Ten-round magazines stay flush or near-flush with the magazine well, making them the right call for hunting, restricted jurisdictions, and shooters who want maximum stability from a shooting bag. Forty-round options exist for those who want fewer reloads during a long range session and accept the added length as a trade-off.

Polymer vs. Metal AR-15 Magazines

The catalog covers both polymer and metal construction because each material has a place. Polymer magazines, exemplified by the Magpul PMAG, resist dents, won't deform feed lips under hard use, and tolerate harsh environments without rusting. Aluminum and steel-bodied magazines such as the DuraMag stainless line offer slimmer profiles, predictable behavior, and a track record stretching back to the rifle's original mil-spec configuration. Most experienced AR-15 owners end up with a working mix of both, and the inventory at AR15Parts.com supports that approach.

Top Brands Stocked

We carry magazines from manufacturers with proven track records across thousands of rounds in the field. Brands featured throughout the AR15 Magazines selection include:

Amend2
C Products Defense
DuraMag
Hexmag
Lancer Systems (L5 AWM)
Magpul (PMAG Gen M2, Gen M3, D-60)
Mission First Tactical
ProMag

Compatibility Notes

AR-15 Magazines must match the cartridge your barrel and bolt are chambered for, and that pairing is non-negotiable for reliable function. A 5.56 NATO magazine will not feed .450 Bushmaster correctly, and a 6.5 Grendel magazine uses a different follower geometry than a standard .223. Most magazines on this page conform to STANAG dimensions and drop into any mil-spec or commercial AR-15 lower, but proprietary billet receivers occasionally require a specific cut that the magazine maker can confirm. When pairing a new magazine with an existing build, match three things: caliber, lower receiver type, and intended round count.

Magazines by Caliber

The list below covers every caliber-specific magazine sub-category we stock, arranged alphabetically. Click any line to view all SKUs available for that cartridge:

Why Choose AR15Parts.com for AR15 Magazines?

AR15Parts.com ships from Denison, Texas, and the team behind the counter builds AR-platform rifles for a living. That hands-on familiarity shapes which magazines earn a spot in our inventory and which get rejected after testing. Here is what sets the buying experience apart:

Caliber-Matched Inventory: Each magazine sub-category is curated to work with the specific bolt and barrel geometry of that cartridge, removing guesswork from the order.
Tested Brands Only: We stock Magpul, Lancer, DuraMag, and other manufacturers whose products have proven themselves over thousands of rounds rather than chasing the cheapest option.
Next-Business-Day Shipping: Almost every order leaves our Texas warehouse the next business day, with most of our inventory housed on-site rather than drop-shipped.
Expert Phone Support: Builders with questions about caliber compatibility or capacity choice can call our team directly during business hours.

Order Your AR-15 Magazines and Build with Confidence Today

Reliable magazines separate a rifle that runs from a rifle that jams, and stocking the right capacity in the right material for your chambering is one of the cheapest ways to upgrade overall performance. Whether you need a single Magpul PMAG to round out a build or a case of Lancer L5 AWMs for a training class, the AR15 Magazines catalog has you covered. Our Denison warehouse holds the inventory, and our shipping turnaround keeps your build moving.

Place your order online or contact AR15Parts.com with questions about caliber matching, bulk pricing, or restricted-state compliance.

Frequently Asked Questions

What capacity AR-15 magazine should I buy first?

For most new AR-15 owners, a 30-round magazine is the right starting point because it matches the standard form factor that nearly every chest rig, dump pouch, and range bag is dimensioned for. Twenty-round magazines make a strong secondary purchase for bench work or compact builds where overall length matters.

Are Magpul PMAGs compatible with every AR-15 lower?

PMAG Gen M2 and Gen M3 magazines drop into the vast majority of mil-spec and commercial AR-15 lowers chambered in .223 Remington and 5.56x45mm NATO. The Gen M3 also fits M4-pattern magazine wells and certain NATO-compatible platforms, though proprietary billet receivers occasionally need confirmation from the rifle manufacturer.

Can I use a 5.56 NATO magazine for .300 Blackout?

Yes, .300 AAC Blackout uses the same case rim diameter as .223 Remington, which means standard 5.56/.223 magazines will feed both rounds reliably. This shared compatibility is one of the reasons .300 Blackout became popular as a drop-in caliber swap on existing AR-15 platforms.

What is the difference between polymer and aluminum AR-15 magazines?

Polymer magazines like the Magpul PMAG resist dents and impact damage that can deform aluminum feed lips, and they don't corrode in humid conditions. Aluminum magazines run slimmer in the receiver and trace their lineage to the original M16 design, giving them a long track record of reliable service.

Will AR15Parts.com ship a 30-round magazine to my state?

We ship in compliance with the laws of the destination address you enter at checkout, which means we will not ship magazines that violate the round-count limits in restricted jurisdictions such as California, New York, or Connecticut. Buyers are responsible for knowing local capacity laws, and our team is reachable by phone for clarification.

How fast does AR15Parts.com ship orders from Denison, Texas?

Almost every magazine order placed during business hours leaves our Denison warehouse the next business day, since we hold inventory on-site rather than relying on third-party drop-shippers. Holiday closures and FFL transfers can extend that timeline, and the operations team will flag any delay before charging the order.