The Shield Arms S15 Magazine Extension adds 5 rounds to your S15 magazine. Shield Arm's 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.
Specifications:

Caliber
Capacity	5rd
Finish	Anodized
Model	Magazine Extension
Material	Aluminum
Type
Model Fit
Brand Fit
Capacity	5