The SideSaddles carries six extra rounds in the most convenient and accessible location for quick reloading without losing sights. The Hytrel polymer shell holder is attached to an aluminum mounting plate that installs directly on the receiver of the shotgun. Installation is easy and, in most cases, requires no alterations to the shotgun. Note: for Remington 870 and Wingmaster, a minor modification to the shotgun's forend is required.