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S15 +5 Pre-installed Magazine Extension Contents

(1) S15 Gen 3 Magazine

(1) Pre-installed anodized Shield Arms S15 +5 Magazine Extension (color options available)

Mag Catch Requirement

It is required to swap out your plastic OEM mag catch with either our standard steel mag catch or our premium steel mag catch. Here's why. If you don't swap your mag catch you may have reliability issues. If you use another manufacturer's mag catch you may have reliability issues. S15 magazines were designed to work with Shield Arms steel mag catches.

Mag Specifications

• 20 +1 total round capacity!
• Same base length as an OEM Glock 43X/48 magazine
• Pre-installed anodized Shield Arms S15 +5 Extension
• Works with our Shield Arms Carry Magwell or Shield Arms Premium Magwell
• Black Nitrocarburized QPQ finish
• Made in the USA
• Patented

Mag Extension Features

• Type-2 anodized in multiple color options*
• Adds 5 rounds to the S15 magazine
• Unique easy access floor plate design to service or clean the magazine body without the need to remove the magazine extension from the body.
• Index cuts on the extension body to increase grip when coming out of a magazine pouch.
• Light but sturdy - Machined from billet 6061 aluminum
• Comes with a 12 coil plus power spring
• Fits Shield Arms S15 magazine ONLY
• Works with our Shield Arms Carry Magwell or Shield Arms Premium Magwell
• Fits most aftermarket flared mag wells

• Proudly made in the USA

*Note: In 2025, the anodized shade of the color option 'Mud' slightly changed. Items previously purchased in this color may not be an exact match to the new shade.

Warranty

Like all Shield Arms products, our S15 pre-installed magazines & accessories come with our 100% lifetime warranty against manufacturing defects. Additionally, we also offer a Spring for Life Guarantee - wear out your spring, get a new one for free, for life.

FREEDOM RESTRICTED STATES

If you live in a state that restricts magazine capacity we cannot ship to you unless you are law enforcement or otherwise exempt. If you are exempt from your state's ban please send us a copy of your documentation or official email to customerservice@shieldarms.com. Please include your order number.

If you purchase from a ban state and you are NOT exempt, we will cancel your order and charge you a 5% cancellation fee.

This item is controlled for export by the International Traffic in Arms Regulations (ITAR). Please check your state and local laws regarding magazine capacity restrictions.