Shield Arms

About Shield Arms

Shield Arms was founded in 2017 in Bigfork, Montana by Brandon Zeider and Seth Berglee with the goal of providing innovation and value to the firearms industry.

The company began operations in a barn, initially specializing in magazine extensions for Glock pistols.

Their breakthrough product was the S15 magazine - a 15-round magazine for the Glock 43X and 48 that fits flush in the same footprint as the factory 10-round magazine.

Since its founding, Shield Arms has experienced rapid growth, expanding from just the two co-founders to more than 40 employees by 2024.

The company has become an internationally recognized manufacturer of firearms and accessories, currently constructing three new buildings to more than triple their existing manufacturing space.

Popular Shield Arms Features

Patent-Pending Magazine Technology

• Unique geometry allows more rounds in the same footprint as factory magazines while maintaining flush fit.

Steel Construction

• Steel magazines provide increased durability over polymer factory alternatives with corrosion-resistant finishes.

Multiple Finish Options

• Powercron, Black Oxide, Nickel, and Black Electroless Nickel coatings offer excellent corrosion resistance for harsh environments.

Folding Rifle Technology

• Patented folding lower receiver system is lighter, stronger, and shorter than popular folding adapters.

Made in USA Quality

• American-made products with stringent quality standards including shot peened and Magnetic Particle Inspected components.

Precision Manufacturing

• 7075-T6 billet aluminum construction and 4150 CMV barrels with stress relief after rifling ensure consistent performance.

Best-Selling Shield Arms Products

S15 Gen 3 Magazine

• 15-round magazine for Glock 43X/48 pistols that fits flush while providing 50% more capacity than factory 10-round magazines.

Z9 Magazine

• 9-round magazine for Glock 43 pistols increases capacity by 50% over factory 6-round magazines in the same length.

SA-15 Folding AR-15 Rifles

• Complete rifle systems featuring patented folding lower receiver technology for compact storage and transport.

Steel Magazine Catches

• Required steel magazine catch and release components for proper S15 magazine function and reliability.

FLR Folding Lower Receiver System

• Patented folding mechanism that doesn't modify the bolt carrier group while maintaining full functionality.

S15 Starter Kit

• Complete package including S15 magazine and required steel magazine catch for Glock 43X/48 conversions.

Magwells for Glock Pistols

• Precision-machined magwells designed to work seamlessly with Shield Arms magazine systems.

Manual Pistol System

• Serialized chassis system compatible with different slides and grips in sub-compact, compact, and full-size options.

Popular Uses for Shield Arms

Concealed Carry

• S15 and Z9 magazines increase capacity while maintaining concealability for everyday carry applications.

Self-Defense and Home Defense

• Increased magazine capacity provides more rounds for defensive situations when reliable operation is critical.

Law Enforcement

• Various law enforcement agencies use Shield Arms products for duty applications with widely-issued Glock platforms.

Competitive Shooting

• Steel construction provides consistency and reliable feeding under rapid fire conditions in shooting competitions.

Military and Professional Users

• Military personnel and contractors rely on Shield Arms products for tactical applications in demanding conditions.

Shield Arms FAQs

QUESTION: Do Shield Arms S15 magazines require special parts for proper function?
ANSWER: Yes, S15 magazines require Shield Arms steel magazine catch for proper function and reliability.

QUESTION: What capacity do Shield Arms magazines offer for Glock pistols?
ANSWER: The S15 provides 15 rounds for Glock 43X/48 while the Z9 offers 9 rounds for Glock 43.

QUESTION: Are Shield Arms products made in the USA?
ANSWER: Yes, all Shield Arms products are manufactured in Bigfork, Montana with American-made quality standards.

QUESTION: What finish options are available for Shield Arms magazines?
ANSWER: Shield Arms offers Powercron, Black Oxide, Nickel, and Black Electroless Nickel finishes for corrosion resistance.

QUESTION: Can I use Shield Arms magazines in states with capacity restrictions?
ANSWER: Products are subject to state and local magazine capacity restrictions, and customers are responsible for ensuring compliance.

QUESTION: What makes Shield Arms magazines different from factory Glock magazines?
ANSWER: Shield Arms uses steel construction with patent-pending geometry to fit more rounds in the same footprint as polymer factory magazines.

QUESTION: Do Shield Arms folding rifles require bolt carrier group modifications?
ANSWER: No, the patented FLR folding system does not modify the bolt carrier group while maintaining full functionality.

QUESTION: How long has Shield Arms been in business?
ANSWER: Shield Arms was founded in 2017 and has grown from 2 founders to over 40 employees by 2024.