Shield Arms

Shield Arms is an American manufacturer based in Bigfork, Montana, focused on magazines, folding rifle platforms, and carry ready upgrades for modern pistols and carbines. Founded in 2017 by shooters and industry veterans, the company builds products in the United States with a strong emphasis on practical capability, lifetime warranty support, and everyday resilience.

Tactical Precision

Shield Arms designs components to tighten tolerances where it matters, improve handling, and keep controls intuitive. From steel magazines that maintain consistent lockup to folding lowers that preserve alignment and zero, each part is engineered to support accurate shooting, fast reloads, and repeatable performance in real use, not only on the bench.

Multi-Mission Ready

The product line serves concealed carriers, duty users, competitors, and prepared citizens. S15 and Z series magazines increase on board capacity in compact pistols without dramatic changes to grip size. SA 15 and SA 9 folding platforms shorten rifle and pistol footprints for transport and storage. Accessories, soft goods, and blades round out daily carry and training needs.

Durability Without Compromise

Shield Arms uses steel magazine bodies, 7075 T6 billet and forged receivers, quality springs, and hard use finishes, then backs many products with a lifetime warranty and Spring for Life program. Designs are created, built, and tested by a team that includes veterans, law enforcement officers, and competitive shooters who rely on the same gear.

Product Focus

Rifles

Shield Arms rifles center on the SA 15 and SA 4 AR platforms and the SA 9 pistol caliber system. The patented SA 15 Folding Lower Receiver integrates the folding mechanism into the receiver, removing the need for separate adapters and reducing weight while keeping a solid lockup for 5.56 and 300 BLK builds. SA 15 and SA 4 complete rifles and builders kits use 7075 T6 billet or forged receivers, M LOK handguards, mid length gas systems, and quality triggers to give builders a compact, accurate foundation that still feels like a familiar AR. The SA 9 series brings the same folding concept to 9mm, using Glock pattern magazines in a short, easily stored package suited for defensive roles and active shooter response kits.

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Magazines

Shield Arms is best known for its patented steel pistol magazines. The S15 Gen 3 is a flush fitting 15 round magazine for Glock 43X and 48 pistols that increases capacity compared to the factory 10 round magazine and works with dedicated steel mag catches and combo kits for a full upgrade path. The Z9 and Z8 series magazines raise capacity in the Glock 43 while keeping a compact profile, and S10 magazines and extensions support grip chopped 43X and 48 builds. Extensions, combo packs, and Spring for Life support give frequent shooters a complete system for carry, training, and competition.

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Chassis and Accessories

Beyond firearms and magazines, Shield Arms offers folding and non folding lower receivers, magwells, mag catches, extensions, carry magwells for slim Glock pistols, and a range of accessories such as slings, soft goods under the Mountain Partisan line, and Shield Knife and Tool blades. These items are designed to integrate cleanly with common platforms, improve reload speed, grip, and carry comfort, and stand up to regular use. Many are available with in house Cerakote finishes and are backed by a lifetime warranty.

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Frequently asked questions

What is the Shield Arms S15?

The Shield Arms S15 is a patented flush fitting 15 round steel magazine for Glock 43X and 48 pistols that increases capacity over OEM magazines while maintaining a slim carry profile, supported by matched steel mag catches and optional extensions and bundles.

Does Shield Arms make magazines for compact Glock pistols?

Yes. Shield Arms produces S15 magazines for Glock 43X and 48, Z9 and Z8 magazines for Glock 43, and S10 magazines for grip chopped 43X and 48 pistols, along with extensions and combo packs aimed at concealed carry, duty, and competition use.

Can I use Shield Arms parts for competition builds?

Many competitors run Shield Arms folding lowers, complete rifles, and high capacity magazines. Products are built for real use with attention to feeding reliability, lockup, and handling, which makes them suitable for match guns as well as defensive and training setups.

Are Shield Arms magazines durable for daily carry?

Shield Arms pistol magazines use steel bodies, tuned springs, and metal catches, and they come with a lifetime warranty and Spring for Life program on many models. They are built for daily carry, frequent training, and high round counts rather than occasional range use only.

Where is Shield Arms based?

Shield Arms is based in Bigfork, Montana, and manufactures its products in the United States with a clear focus on American craftsmanship and local employment.

Where can I buy Shield Arms parts and magazines?

Shield Arms products are available through the company website, dealers, and distributors, and many rifles, pistols, lowers, and magazines appear on online marketplaces. On GunsAmerica you can find Shield Arms S15 magazines, SA 15 and SA 9 firearms, and related accessories.

About

Shield Arms is a Montana based company founded in 2017 with a goal of delivering practical innovation and real capability to shooters instead of cosmetic upgrades. The team includes veterans, law enforcement professionals, competitors, hunters, and prepared citizens who use the same products they design. The company focuses on American manufacturing, lifetime warranties, and a product line that covers pistol magazines, folding and standard AR platforms, carry focused pistols, accessories, and soft goods that support daily readiness.

History

Popular Models

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