This Shield Arms magazine (part no. S15-ME-2INS-G3-BLK) is a Gen 3 Nitrocarb S15 9mm magazine with the brand’s anodized +2 extension pre-installed, bringing capacity from a base of 15 rounds up to 17. Shield Arms’ easy-access floorplate design lets you service the spring and follower without removing the extension.

Key Specifications

• Chambered in 9mm Luger.
• Base Gen 3 Nitrocarb magazine holds 15 rounds; with the pre-installed +2 extension, capacity reaches 17 rounds.
• Extension is machined from billet 6061 aluminum and Type 2 anodized.
• Easy-access floorplate lets you service the spring/follower without removing the extension.
• Index cuts on the extension body improve grip when drawing from a mag pouch.
• Ships with an 11-coil-plus power spring.
• Fits most aftermarket flared mag wells.
• Proudly made in the USA.
• Backed by a lifetime warranty and Shield Arms’ Spring for Life guarantee.

Frequently Asked Questions

How many rounds does this Shield Arms magazine hold? The base Gen 3 Nitrocarb magazine holds 15 rounds; with the pre-installed +2 extension, total capacity is 17 rounds.

Do I need a special mag catch for this magazine? Shield Arms recommends swapping to one of their steel mag catches (standard or premium) for reliable function; Gen 2 magazines are designed to work with Shield Arms steel mag catches specifically.

Buy the Shield Arms S15 17-Round Magazine

Order it from our Lubbock, Texas gun shop for fast shipping direct to your door. Browse our full handgun magazines selection.