The Shield Arms PMAG +5 Extension adds 5 rounds to your Magpul PMAG magazine. This 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. 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 gen 2 or gen 3 Magpul PMAG Designed to work with OEM spring Proudly made in the USA Lifetime warranty