The Shield Arms S15 +10 Magazine Extension adds 10 rounds to your S15 magazine. Our 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.

Features:
Compatible with Gen 2 and Gen 3 S15 magazines
Index cuts on the extension body to increase grip when coming out of a magazine pouch.
Machined from billet 6061 aluminum
Type 2 anodized
Comes with a 15 coil plus power spring 
Fits Shield Arms S15 magazine only
Installation Instructions

Proudly made in the USA
Lifetime warranty

Please check your state and local laws regarding magazine capacity restrictions.