Ruger SR40 Magazines
Factory Ruger OEM / ProMag • SR40 / SR40c Compact • .40 S&W • 10 / 15 / 25 Round
The Ruger SR40 — introduced November 2010 as the .40 S&W variant of the SR9 platform that marked Ruger's first serious entry into the striker-fired polymer service-pistol market — was discontinued in 2017 when Ruger consolidated around the American Pistol and Security-9 families. Hundreds of thousands of SR40s remain in civilian ownership and require ongoing factory-magazine support. Keep Shooting carries the complete SR40 magazine lineup: factory Ruger OEM 10- and 15-round magazines for both the full-size SR40 and compact SR40c, plus ProMag 15- and 25-round aftermarket alternatives.
About Ruger SR40 Magazines at Keep Shooting
Keep Shooting carries five magazines for the Ruger SR40 and SR40c Compact — factory Ruger OEM 10-round and 15-round magazines for the full-size SR40, the factory SR40c 15-round magazine for the compact variant, and ProMag's aftermarket 15- and 25-round extended magazines. The SR40 is a discontinued platform (Ruger ceased production around 2017 when consolidating around the American Pistol and Security-9 families), but hundreds of thousands remain in civilian ownership and require continuing factory-magazine support. For the broader Ruger magazine lineup, see our parent Ruger Magazines category, or the Ruger brand page for the full Ruger catalog.
The Ruger SR-series was Ruger's first serious entry into the striker-fired polymer service-pistol market that Glock had opened in 1982 and that Smith & Wesson had joined with the M&P in 2005. Ruger launched the SR9 in October 2007 (the 9mm full-size original), followed by the SR40 in November 2010 (the .40 S&W variant, released for the 2011 model year), the compact SR9c and SR40c variants in 2011, and the SR45 (.45 ACP) in 2013. The SR-series was Ruger's attempt to compete directly with the Glock 17/22/21 service-pistol family on duty-pistol procurement contracts and civilian concealed-carry market share.
The SR40's engineering distinguishing features set it apart from the Glock competition in specific ways. One of the lowest bore axes in the polymer service-pistol market — the SR40's slide sits lower over the shooter's grip hand than any Glock, SIG P320, or M&P, which produces less muzzle flip on recoil and faster sight recovery between shots. An ambidextrous manual thumb safety (unusual for a polymer striker-fired service pistol — Glock and M&P famously do not include manual safeties as standard). A magazine disconnect — the pistol will not fire without a magazine inserted, controversial among some defensive users but a standard California-compliance feature. A loaded chamber indicator — a visible and tactile tab that protrudes when a round is chambered. A reversible backstrap — the backstrap could be flipped to produce either a straight or arched grip profile, letting owners adjust frame ergonomics without swapping parts. The SR40 measured 7.55 inches long, 5.52 inches tall, 1.27 inches wide, and 27.25 ounces unloaded, with a 4.14-inch barrel and 15-round standard magazine.
The SR40c Compact was Ruger's concealed-carry variant — a shortened slide and grip for IWB carry, sharing the SR40's trigger group, safety, and Secure Action geometry. The SR40c dimensions were 6.85 inches long, 4.61 inches tall, and 23.4 ounces unloaded, with a 3.5-inch barrel. The SR40c accepted either its dedicated 9-round flush-fit magazine or the full-size SR40's 15-round magazine (which fit and fed reliably, protruding below the Compact's shortened grip with a sleeve adapter). Keep Shooting stocks the SR40c factory magazine ($39.53) as a full-size 15-round magazine that fits both the full-size SR40 and the SR40c Compact.
Why was the SR-series discontinued? Ruger's transition away from the SR-series around 2017 was driven by two strategic decisions. First, the Ruger American Pistol (introduced January 2016) was positioned as Ruger's entry to the US Army's Modular Handgun System (MHS) program and represented an updated engineering architecture with modular grip inserts, ambidextrous controls, and a trigger geometry Ruger considered more competitive with the contemporary Glock Gen 5 and Sig P320. Second, the Ruger Security-9 (introduced December 2017) occupied the value-tier market segment at $379 MSRP — a price point the SR-series could not sustain while maintaining its more complex manual-safety and magazine- disconnect features. The SR40 had also arrived at the tail end of the .40 S&W service-pistol era — by 2015–2016, the FBI and major US law-enforcement agencies had begun the transition back to 9mm, and .40 S&W market demand was contracting across the industry. Ruger discontinued the SR-series around 2017, keeping the platforms on the catalog through remaining inventory cycles. New SR40 pistols are no longer in production.
The installed SR40 ownership base — hundreds of thousands of pistols across SR40 full-size and SR40c Compact — is the reason factory-magazine support continues. Ruger has maintained factory magazine production for the SR- series despite the pistol platform's discontinuation, recognizing that orphaned-platform magazine availability is a warranty and customer-service obligation. This is consistent with Ruger's historical practice — factory magazines for the discontinued P-series (P85, P89, P95) pistols remained in production decades after the pistols themselves exited the catalog. SR40 owners can expect continued factory-magazine availability as long as the installed base justifies production.
Factory Ruger OEM magazines for the SR40 family come in two configurations. The 15-round magazine ($39.53) is the service-standard capacity and the magazine shipped with factory SR40 and SR40c pistols. The 10-round magazine ($41.91) is the compliance variant for capacity-restricted states — shortened body, reduced-capacity follower, same feed geometry. Both are factory Ruger OEM production.
ProMag's aftermarket lineup covers the extended-capacity competition tier. ProMag's 15-round SR40 magazine ($24.43) is the value- priced factory-equivalent at approximately 60% of the factory Ruger OEM price point — the same capacity, similar construction, meaningfully lower cost for shooters building up magazine inventory for range practice. ProMag's 25-round extended magazine ($35.05) is the competition and range-practice extended option — roughly 1.7x the factory capacity with a body that extends below the grip frame, unsuitable for carry but well-suited to 3-gun and USPSA Limited competition. ProMag (Ontario, California) has produced magazines across dozens of pistol and rifle platforms since 1984 — see our ProMag brand page for the full ProMag catalog.
Magazine compatibility rules. SR40 and SR40c magazines are SR-series-specific and do NOT cross-migrate to other Ruger platforms. The SR9 (9mm) uses a different magazine tailored to the 9mm cartridge dimensions — SR9 magazines do NOT fit the SR40, and SR40 magazines do NOT fit the SR9 (despite the shared frame). The SR45 (.45 ACP) uses yet another magazine. The Security-9, the American Pistol, and the Max-9 all use entirely different magazine geometries. Within the SR-series .40 family, the SR40 and SR40c share magazine wells — the full-size SR40 15-round magazine fits and feeds in the SR40c Compact (with protrusion below the Compact's shortened grip), and the SR40c dedicated flush-fit magazine fits in the SR40 full- size with reduced capacity. For Security-9 magazines specifically, see our Ruger Security-9 Magazines category.
The SR40 civilian market today is specifically an orphaned-platform ownership community. Long-term SR40 owners who bought the pistol new between 2010 and 2017 and continue to carry / range / home-defense the platform form the primary buyer cohort for replacement magazines — typically replacing spring- fatigued magazines after 5–10 years of sustained use. Police-trade-in and secondary-market buyers who purchased used SR40s at discounted prices post-discontinuation sometimes find themselves short on magazines from the original owner's inventory and need factory or ProMag replacements. .40 S&W cartridge loyalists who prefer the SR40's low bore axis and ambidextrous manual safety over the contemporary Glock 22 alternative represent a small but committed cohort. Competition shooters in USPSA Limited division use SR40 platforms where the low bore axis advantage matters for double-tap recoil management.
Keep Shooting ships all SR40 magazines from our Pennsylvania warehouse with free shipping on orders over $49.95 and hassle-free returns. Magazine shipments comply with destination-state capacity restrictions — the 10-round SR40 magazine ships to all 50 US states, but the 15- and 25-round magazines will not ship to California, New York, New Jersey, Massachusetts, Hawaii, Colorado, Washington, Oregon, Illinois, Vermont, or Washington DC (state-level rules vary — verify before ordering). Whether you're a long-term SR40 owner replacing spring-fatigued duty magazines, a police-trade-in buyer rebuilding the magazine inventory of a used SR40 purchase, an SR40c concealed-carry user stocking factory 15-round magazines that work in both your carry pistol and a home-defense SR40 full-size, or a USPSA Limited-division competitor running ProMag 25-round extendeds for stage reloads, every SR40 magazine in our catalog is verified to feed the SR-series .40 S&W platform reliably and is backed by its respective manufacturer's warranty.
Frequently Asked Questions — SR40 Mags
Keep Shooting carries a wide selection of SR40 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 SR40 Mags products. Orders typically ship within 1–2 business days.
Keep Shooting offers hassle-free returns on SR40 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 SR40 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.