The Shield Arms Glock 19/23 Magazine Extension adds 5 rounds to your Glock 19 magazine and 4 rounds to your Glock 23 magazine. The unique easy access floor plate design allows you to quickly access the spring and follower without removing the extension from the magazine body. This product comes with a 100% lifetime warranty and the Shield Arms Spring for Life guarantee.Features:- Unique easy access floor plate design- Index cuts on the extension body- Machined from billet 6061 aluminum- Type 2 anodized- Comes with a +10% power spring- Fits OEM Glock 13 and 15 round magazines only- Proudly made in the USA- Fits most aftermarket flared mag wells- Lifetime warrantyThis particular model is available in ODA Green a color that originated as a special run for a deployed Operational Detachment Alpha (ODA) and continues to support the Green Beret Foundation with a portion of the proceeds.