Smith & Wesson M&P Magazines
M&P9 • M&P40 • M&P45 • Shield 9/40/45/.380 • M&P15-22 • M&P22 • M&P10
Factory Smith & Wesson, ProMag, and ETS magazines for the complete M&P family — the polymer striker-fired service pistol line (Military & Police) introduced in 2005 that made S&W one of the two dominant American polymer-pistol manufacturers alongside Glock. 24 SKUs across every M&P variant in production: full-size M&P9 / M&P40 / M&P45 service pistols, M&P Compact double-stack, slim single-stack M&P Shield in 9mm / .40 / .45 / .380, M&P22 rimfire, M&P15-22 rimfire AR-trainer carbine, and the M&P10 .308 AR-pattern rifle — plus ETS and ProMag aftermarket extended capacities.
About Smith & Wesson M&P Magazines at Keep Shooting
Keep Shooting carries 24 magazine SKUs for the Smith & Wesson M&P (Military & Police) family — the polymer striker-fired service pistol line S&W introduced in 2005 that became the primary American competitor to the Glock service pistol and one of the two dominant American duty-pistol platforms in law enforcement and civilian concealed-carry markets. The catalog covers the full lineup: full-size M&P9, M&P40, and M&P45 service pistols and their Compact variants, the slim single-stack M&P Shield family in 9mm / .40 S&W / .45 ACP / .380 ACP, the M&P22 rimfire pistol, the M&P15-22 rimfire AR-pattern carbine, and the M&P10 AR-10 rifle. Production spans factory Smith & Wesson, ProMag aftermarket, and Elite Tactical Systems (ETS) translucent-polymer extended-capacity production.
Smith & Wesson history. Horace Smith and Daniel B. Wesson founded Smith & Wesson in 1852 in Springfield, Massachusetts — making S&W one of the oldest continuously-operating firearms manufacturers in the United States. For most of the company's 170-year history Smith & Wesson was primarily a revolver manufacturer, and the company's most iconic products are revolvers: the Model 10 (K-frame .38 Special that equipped American police from the 1950s through the 1980s), the Model 29 (.44 Magnum N-frame made famous as Dirty Harry's revolver in the 1971 Clint Eastwood film), and the J-frame snub-nose .38 Specials (Model 36, 37, 38) that became the dominant American plainclothes-carry revolvers. S&W did produce semi-automatic pistols — the iconic 1954 Model 39 9mm, the Model 59 double-stack 9mm, and the 1980s-era third-generation semi-autos — but the company's semi-auto reputation lagged behind Glock, SIG Sauer, and Beretta in the American duty-pistol market through most of the 1990s and early 2000s.
The 2005 M&P reset. In 2005 Smith & Wesson released the M&P (Military & Police) — a ground-up polymer-framed striker-fired service pistol aimed squarely at the Glock-dominated American law-enforcement market. The "Military & Police" name was a deliberate reclamation: S&W had previously used the "Military & Police" designation for the Model 10 K-frame revolver from 1899 through the 1960s as a police-duty revolver. The 2005 M&P repurposed the name for the new polymer-era service pistol — signaling S&W's intention to reclaim the American police-duty pistol market it had lost in the 1980s revolver-to- semi-auto transition. The M&P delivered on the signal: progressive-duty trigger, stainless barrel, steel slide, polymer frame with interchangeable backstrap panels (first major American service pistol with this feature — Walther's P99 had pioneered the concept in 1996, Glock later added it on the Gen4 in 2010), and chambered across the full American service-pistol caliber range of 9mm, .357 SIG, .40 S&W, and .45 ACP.
M&P9, M&P40, M&P45 — the full-size service pistols. The full-size M&P platform is S&W's answer to the Glock 17, 22, and 21. Our catalog covers factory M&P9 in 17-round (standard) and 10-round (compliance) capacities, M&P40 10-round, and M&P45 standard (factory 10-round capacity) and M&P45 14-round extended magazine. All three calibers share the same polymer frame design with caliber- specific magazine wells and proprietary feed-lip geometries tuned to each cartridge. Factory M&P magazines use stainless- steel bodies with polymer followers and drop-free operation.
M&P Compact — same frame, shorter grip. The M&P Compact is the shortened- grip / shortened-slide variant of the full-size M&P family designed for concealed carry or duty backup. The Compact still uses a double-stack magazine (unlike the Shield's single-stack design), giving it higher capacity than the Shield at the cost of slightly more grip width. Our catalog carries M&P9 Compact magazines in 10 and 12-round capacities, with both flush-fit and finger-rest floorplate variants (the finger-rest floorplate adds the curved pinky-extension that makes the compact's short grip more controllable). The M&P45 Compact magazine is an 8-round capacity, and the M&P40 is covered under the 10-round factory option.
M&P Shield — the slim single-stack. In 2012 Smith & Wesson released the M&P Shield — a slim single-stack polymer concealed-carry pistol designed to compete with the Ruger LC9, Kahr CW9, and other 2010s-era slim 9mm carry pistols. The Shield became one of the single most commercially successful American concealed-carry pistols of the 2010s, with sales that rivaled or exceeded the Glock 43 in multiple market years. The Shield chambering family covers 9mm, .40 S&W, .45 ACP, and .380 ACP. Shield magazines are NOT interchangeable with standard M&P magazines — the single-stack Shield frame is substantially narrower and uses a proprietary single-stack magazine design. Our catalog covers factory Shield 9mm magazines (7-round flush-fit and 8-round extended), Shield .40 magazines, Shield .45 7-round magazines, and the distinctive Shield .380 (which is the Shield EZ variant with its notably easier-to- rack slide, aimed at shooters with reduced hand strength).
M&P22 — the rimfire pistol. The M&P22 is S&W's .22 LR rimfire polymer pistol styled to match the full- size M&P service pistol ergonomically — the rimfire trainer that lets M&P owners practice trigger fundamentals without the ammunition cost or recoil of 9mm. Our Keep Shooting-branded M&P22 magazine is the original capacity replacement for the pistol, manufactured to factory-spec dimensions for reliable feeding in the M&P22 action.
M&P15-22 — the .22 LR AR-15 trainer carbine. The M&P15-22 is Smith & Wesson's rimfire AR-pattern carbine — externally styled and sized like a full-scale 5.56 AR-15 / M4 but internally a blowback .22 LR action with a dedicated rimfire magazine. The platform has become one of the most commercially successful rimfire AR-pattern rifles in the US market, particularly for training and recreational shooting where the AR-15 STANAG magazine is replaced by a proprietary 25-round rimfire magazine. Our catalog covers the factory 25-round M&P15-22 magazine, the 10-round compliance variant, and the FDE (flat dark earth) cosmetic variant. The M&P15-22 magazine is NOT interchangeable with standard 5.56 AR-15 magazines — completely different magazine pattern for the rimfire cartridge.
M&P10 — the S&W AR-10. The M&P10 is S&W's 7.62×51 NATO / .308 Winchester AR-10 pattern rifle — produced from 2013 through approximately 2019, when S&W discontinued the platform to focus on the M&P15 5.56 line. The M&P10 used a DPMS LR-308 pattern magazine well (NOT the SR-25 pattern used by our AR-10 Magazines category's Magpul PMAG LR/SR production), and the M&P10-specific magazine we carry is the 5-round factory S&W production suited to hunting or state-compliance use. Many M&P10 rifles are still in civilian ownership from the platform's 2013 – 2019 production run, and magazine supply is primarily through remaining S&W factory stock.
ProMag and ETS aftermarket. Beyond factory Smith & Wesson production, our M&P catalog includes ProMag M&P45 production in 10-round and 13-round capacities — ProMag's US-made aftermarket as a value- priced alternative to factory magazines. Our catalog also includes Elite Tactical Systems (ETS) translucent- polymer magazines for the M&P9 in 17-round and 30-round extended capacities. ETS magazines are distinctive for their translucent polymer body — the shooter can see remaining cartridge count through the magazine body, eliminating the uncertainty of not knowing how many rounds remain. The 30-round ETS is the competition-use extended option for M&P9 owners running USPSA, IDPA, or 3-gun stages where reload count matters.
Platform compatibility — critical warnings. The M&P line has enough internal variation that cross-compatibility errors are the #1 customer-error risk in this category: M&P9 magazines do NOT fit M&P9 Shield (full- size double-stack versus slim single-stack — completely different magazine pattern). M&P Compact magazines DO fit full-size M&P pistols (shorter grip, but same double-stack magazine-well dimensions — the reverse is not true, the full-size magazine protrudes from the Compact frame). M&P9 magazines do NOT fit M&P40 or M&P45 — caliber- specific frame widths and feed-lip geometries. M&P22 magazines do NOT fit M&P15-22 — pistol magazine vs. carbine magazine, completely different pattern. M&P Shield 9mm, .40, .45, and .380 magazines are all caliber-specific and NOT interchangeable. M&P10 magazines (DPMS pattern) do NOT fit Magpul PMAG LR/SR AR-10 magazines (SR-25 pattern) — these are two different AR-10 patterns despite both being 7.62 NATO.
Keep Shooting ships all M&P magazines from our Pennsylvania warehouse with free shipping on orders over $49.95 and hassle-free returns. The 5-round M&P10, 7- and 8-round Shield, 8- and 10-round M&P Compact, and 10-round full-size M&P magazines ship to all 50 US states; the 12-, 14-, 17-, and 25-round and 30-round capacities comply with destination- state capacity rules (verify before ordering). For M&P shooters building reload speed, the Maglula UpLULA universal pistol loader works across every M&P and M&P Shield pistol magazine — see our Magazine Loaders category. For the broader handgun magazine catalog across every major pistol manufacturer we stock, see our complete handgun hub. Whether you're an M&P9 duty shooter stocking 17-round range magazines, an M&P Shield concealed-carry licensee adding defensive spares, an M&P15-22 rimfire trainer burning through bricks of .22 LR, or an M&P10 owner keeping your discontinued AR-10 platform stocked with factory magazines, every magazine in this catalog is factory Smith & Wesson, ProMag, or ETS production — authentic replacement or aftermarket capacity for every M&P variant in production.
Frequently Asked Questions — M&P Mags
Keep Shooting carries a wide selection of M&P Mags products from trusted brands. Browse our catalog to see the full range, and use the filters on the left to narrow by brand, price, or product type.
Yes! All orders over $49.95 qualify for free shipping, including M&P Mags products. Orders typically ship within 1–2 business days.
Keep Shooting offers hassle-free returns on M&P Mags products. If you're not completely satisfied, contact our customer service team for a return authorization. All products must be in original, unused condition.
If you need help choosing the right M&P Mags product, our team is available to assist. Check individual product descriptions for detailed specifications, or contact us directly and we'll help you find the best fit for your needs.