Check-Mate Industries
Authorized Dealer • Made in USA • OEM to SIG, S&W, Para • Since 1974
Check-Mate Industries of Long Island, New York is the stealth OEM behind much of the American factory-magazine industry — the manufacturer that supplies SIG Sauer, Smith & Wesson, Para Ordnance, Kahr Arms, and 15+ other pistol makers with the magazines that ship in their factory boxes. If your SIG P320 or P365 magazine says "Made in USA," it is almost certainly a Check-Mate. Founded as a tool-and-die shop and securing its first military contract in 1974, Check-Mate has produced over 10 million magazines across 400+ military contracts in five decades. Our catalog includes Check-Mate 1911 .45 ACP magazines (7-round stainless and 10-round extended), the Check-Mate SIG P226 18-round magazine, and the Check-Mate S&W M&P Shield 8-round 9mm magazine — the actual magazines that factory pistols ship with, priced as aftermarket spares.
About Check-Mate Industries at Keep Shooting
Keep Shooting is an authorized Check-Mate Industries dealer carrying their 1911 .45 ACP magazines (7-round stainless steel and 10-round extended), SIG Sauer P226 18-round 9mm magazine, and Smith & Wesson M&P Shield 8-round 9mm magazine. Check-Mate is the largest American pistol-magazine OEM manufacturer that most gun owners have never heard of — the Long-Island, New York firm that produces factory-spec magazines for SIG Sauer, Smith & Wesson, Para Ordnance, Kahr Arms, Kimber, and dozens of other manufacturers. If you own a SIG P320, SIG P365, S&W M&P Shield, or Para Ordnance 1911 and your factory magazine says "Made in USA" on the floorplate, you are almost certainly holding a Check-Mate.
Tool-and-die origins — the 1974 contract. Check-Mate Industries began as a tool-and-die manufacturer in Bohemia on Long Island, New York — a precision metalworking shop producing stamped, milled, and formed-metal components for commercial and industrial customers. The company won its first firearms-related contract in 1974 and has steadily expanded its presence in the firearms-industry magazine market ever since. Tool-and-die manufacturing is the right background for magazine production — modern pistol magazines are precision-stamped sheet-metal bodies with carefully tuned spring and follower geometries, and the engineering disciplines that produce a reliable injection-mold tool or a precision automotive stamping translate directly to magazine production. Check-Mate's heritage as a precision metalworker rather than a "magazine company" is visible in the manufacturing consistency of their output.
The numbers — 50 years, 400+ contracts, 10 million magazines. By Check-Mate's own count the company has fulfilled over 400 different military contracts across roughly five decades of operation and produced approximately 10 million pistol magazines. Those are not the numbers of a boutique custom shop; they are the numbers of one of America's largest sustained magazine producers. The military contracts span US Department of Defense procurement (1911-pattern magazines, M14/M1A magazines, and Beretta 92/M9 magazines for US-issue service pistols and rifles), allied military procurement, and federal-agency contracts. The commercial business — magazines sold under the Check-Mate brand and magazines produced as OEM stock for other manufacturers — has been even larger in volume.
The OEM stealth — 15+ manufacturer partnerships. Check-Mate's most distinctive commercial position is as the unbranded OEM supplier for many of the major American pistol makers. The arrangement works as follows: a firearms manufacturer (call it Manufacturer X) designs a new pistol and needs a high-quality factory magazine but does not want to invest in their own magazine-stamping facility, tooling, and labor. Manufacturer X contracts with Check-Mate to produce magazines to Manufacturer X's specifications, which Check-Mate delivers in bulk to be packaged in Manufacturer X's factory pistol boxes — typically marked with Manufacturer X's logo and floorplate markings, with no Check-Mate branding visible. The result: the magazine in the box that Manufacturer X is shipping is in fact a Check-Mate product. The 15+ manufacturer partnerships are believed to include SIG Sauer (P226, P229, P220, P320, P365), Smith & Wesson (M&P Shield in 9mm and .40), Para Ordnance (the Canadian-then-American 1911 maker whose Para magazines were substantially Check-Mate production), Kahr Arms, Kimber, and Springfield Armory — although the contracts are not always public, and OEM production arrangements shift between manufacturers and contract cycles. The practical takeaway: the Check-Mate magazines on our shelf are the same engineering DNA as the factory magazines that ship in new pistol boxes from these makers, often produced on the same tooling and assembly line.
1911 .45 ACP magazines — the Check-Mate flagship. The 1911 platform is Check-Mate's oldest and most refined product line. The Check-Mate 1911 7-Round Stainless Steel Magazine ($20.06) is the historically-correct single-stack capacity — designed by John Browning in 1911 and unchanged in basic form for over a century — in stainless construction that resists corrosion better than the traditional blued steel. The Check-Mate 1911 10-Round Magazine ($26.00) is the extended-capacity variant for competition Single Stack division and home-defense applications where the original 7-round capacity is considered insufficient. Both magazines feature Check-Mate's precision-stamped bodies, hardened followers, and welded floorplates; both are drop-in compatible with Colt, Springfield, Para, Auto Ordnance, and other 1911-pattern pistols. For broader 1911 magazine and parts shopping see our 1911 Magazines hub and 1911 Parts & Accessories category.
SIG P226 18-round magazine. The Check-Mate SIG P226 18-Round Magazine ($27.61) is the extended-capacity 9mm magazine for the SIG Sauer P226 — the German-American full-size service pistol introduced in 1984 as SIG's entry into the US Army XM9 trials (which Beretta won, but the P226 was subsequently adopted by the FBI, US Navy SEALs, and many federal and state law- enforcement agencies). The standard P226 magazine capacity is 15 rounds in the original German production; the 18-round Check-Mate variant provides the higher capacity that modern competition and duty-use configurations call for. The magazine is dimensionally compatible with the standard P226 grip frame but extends approximately 0.5" below the magazine well to accommodate the additional three rounds. For the SIG-specific magazine catalog see our SIG Magazines hub.
S&W M&P Shield 8-round 9mm magazine. The Check-Mate S&W Shield 8-Round Magazine ($24.52) is the extended-capacity magazine for the Smith & Wesson M&P Shield sub-compact concealed-carry pistol in 9mm. The factory Shield magazines come in 7-round (flush-fit) and 8-round (extended floorplate) configurations; the 8-round Check-Mate is the extended variant with a finger-rest floorplate that adds approximately a quarter-inch to the magazine's protrusion below the grip. The Shield is one of the most popular American concealed-carry pistols of the 2010s and 2020s, and 8-round magazines are the standard spare-magazine choice for permit holders carrying the Shield daily. For the broader S&W magazine catalog see our Smith & Wesson Magazines and M&P Magazines hubs.
Made in USA. All Check-Mate magazines are produced in their Long Island, New York facility — fully domestic manufacturing from sheet-metal raw material through final assembly and quality inspection. For American buyers prioritizing domestic production and supply- chain transparency, Check-Mate is among the cleanest options in the magazine market: not assembled in the US from imported components, not partially manufactured offshore, but actually stamped, formed, sprung, and assembled in a New York State factory. This domestic- production stance also has regulatory implications for 922(r) compliance contexts where US parts content matters for imported rifle conversions, although that applies more to rifle magazines (M1A/M14, etc.) than to pistol magazines.
Comparable brands and the magazine market. The American pistol-magazine market has a small number of high-quality manufacturers and a much larger number of importers and value-tier producers. The high-quality domestic tier — where Check-Mate sits — also includes Wilson Combat (custom-1911 specialist with the ETM "Elite Tactical Magazine" line), Ed Brown (premium 1911 magazines), and Pachmayr (legacy magazine maker now part of Lyman Products). The Italian magazine specialist Mec-Gar is the European counterpart to Check-Mate — also producing OEM factory magazines for many major manufacturers (Beretta, Walther, Browning, CZ) under the same kind of unbranded OEM arrangement. At the value-tier domestic end, KCI USA (the South-Korean-designed line distributed in the US) covers the budget segment.
Keep Shooting ships all Check-Mate Industries magazines from our Pennsylvania warehouse with free shipping on orders over $49.95 and hassle-free returns. Whether you are a 1911 owner stocking historically-correct 7-round stainless magazines, a competition shooter loading 10-round Single-Stack-division mags, a SIG P226 owner adding extended 18-round capacity for range and duty use, or an M&P Shield permit holder building out a daily- carry magazine rotation — every Check-Mate magazine in our catalog is genuine US-manufactured Check-Mate production, sourced through authorized distribution.
Frequently Asked Questions — Check-Mate Industries
Yes, we maintain inventory of the most popular Check-Mate Industries products. Each product listing shows real-time stock status. If an item is temporarily out of stock, you can sign up for back-in-stock notifications on the product page.
Yes! All orders over $49.95 qualify for free shipping, including Check-Mate Industries products. Orders typically ship within 1–2 business days.
Keep Shooting offers hassle-free returns on Check-Mate Industries products. If you're not completely satisfied, contact our customer service team for a return authorization. All products must be in original, unused condition.
Yes, Keep Shooting is an authorized Check-Mate Industries dealer. All products are sourced directly and include full manufacturer warranty coverage.