The Shield Arms S15 Magazine Extension adds 5 rounds to your S15 magazine. 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.

• Unique easy access floor plate
• Index cuts on the extension body
• Machined from billet 6061 aluminum
• Type 2 anodized
• Adds 5 rounds to Shield Arms S15 Gen 2 magazine
• 12 coil plus power spring
• Proudly made in the USA
• Fits most aftermarket flared mag wells
• Lifetime warranty