The Mesa Tactical Leo Stock Adapter transforms your Mossberg 500 or 590 shotgun by enabling the installation of AR-15 adjustable buttstocks and pistol grips for enhanced tactical performance and familiar handling characteristics.Mesa Tactical Leo Stock Adapter for Mossberg 500/590 ShotgunsCompatible with Mossberg 500 and 590 platformsAccepts AR-15 receiver extension tubes and telescoping stocksEnables AR-15 pistol grip installation for improved controlCollapsible stock capability for easier storage and deploymentMimics AR-15 lower receiver interface for reliable attachmentPerfect for tactical applications law enforcement and shooters seeking to optimize their Mossberg shotgun with the ergonomics and adjustability of AR-15 components while maintaining reliable performance.