The Shield Arms S15 Magazine Extension increases the capacity of the S15 magazine by 5 rounds and features an easy access floor plate for maintenance without removing the extension.
Constructed from billet 6061 aluminum with Type 2 anodization, the extension is durable, fits Shield Arms S15 magazines, and is compatible with most flared mag wells.
It is made in the USA, comes with an 11 coil plus power spring, and includes a 100% lifetime warranty, ensuring reliability and customer satisfaction.