The Shield Arms S15 Gen 2 PowerCron 15 round 9mm magazine with an anodized Shield Arms +5 magazine extension pre-installed. Their unique easy access floor plate design allows you to quickly access the spring and follower without having to remove the extension from the magazine body. Comes with a 100% lifetime warranty and the Shield Arms Spring for LIfe Guarantee. Magazine Extension Features - Unique easy access floor plate design to service or clean the magazine body without the need to remove the magazine extension from the magazine body. - Index cuts on the extension body to increase grip when coming out of a magazine pouch. - Machined from billet 6061 aluminum - Type 2 anodized - Adds 5 rounds to Shield Arms S15 Gen 2 PowerCron magazine - Comes with a 12 coil plus power spring - Proudly made in the USA - Fits most aftermarket flared mag wells - Lifetime warranty Mag Catch Requirement - It is required to swap out your plastic OEM mag catch with either their standard steel mag catch or the 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. Gen 2 magazines were designed to work with Shield Arms steel mag catches. If you have a first generation aluminum mag catch it is required to upgrade to one of our steel mag catch offerings. Main Features Caliber: 9mm Luger Capacity: 15rd Finish: Nitride Other Features Color: Black Fit: Fits Glock 48/43X Magazine Caliber: 9mm Luger Magazine Capacity: 20 rds Magazine Finish: Black Aluminum Material: Steel Model: S15 Magazine Part Number: S15-ME-5INS-G3-BLK UPC: 853465008995 Weight: 0.30 lbs

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