LEO® Gen II Telescoping Stock Adapter For Moss 500/590A1/Mav88 (12-GA And 20-GA)

Use Mesa Tactical’s collapsible stock kits and adapters to install AR-15 adjustable buttstocks and pistol grips onto the venerable Mossberg 500 shotgun platforms for the ultimate in tactical shotgun configuration performance. The LEO adapter is our most basic, best-selling model, and features an optimal stock elevation allowing the use of iron sights or even the bead sight. 

The concept behind the telescoping stock system is simple: the shotgun stock is replaced by an adapter, which attaches to the rear end of the shotgun’s receiver and it, in turn, mimics the rear end of an AR-15 lower receiver, into which an AR-15 receiver extension tube can be threaded. The AR-15 telescoping stock and pistol grip can then be reliably attached.  

The LEO adapter is available in three types of kits, adapter kits, recoil starter packs or complete stock kits. Mesa Tactical’s upgraded versions include KynSHOT's hydraulic recoil buffers which replace the standard receiver extension tube normally used with AR-15 style telescoping stock assemblies. The recoil buffer is manufactured for Mesa Tactical by Kyntec. The KynSHOT hydraulic buffers (Mil-spec) are a recoil reducer designed for professional operators who require optimum accuracy and control. The KynSHOT® hydraulic recoil buffers reduce felt recoil from 70% up to 90%.

LEO® Telescoping Stock Adapters and Conversion Kits

• Adapts AR-15 style buttstocks and pistol grips for use with Remington 870, Mossberg 500/590 and Beretta 1301 shotguns.
• Stock adapters are investment cast aircraft grade aluminum, CNC machined and powdercoated black with a tough, chemical resistant finish.
• Adjustable length-of-pull (LoP) to fit shooter’s stature or for use with body armor and other equipment.
• Optional KynSHOT® non-adjustable hydraulic recoil buffer reduces felt recoil by 70%; KynSHOT® adjustable hydraulic recoil buffer reduces felt recoil by up to 90%.
• Gives the shotgun similar handling characteristics to the AR-15.
• Collapsible stock makes shotgun easier to stow, transport and deploy.
• Pistol grip configuration allows increased control and user comfort.
• Sling attachment points included.
• Optional SureShell® aluminum carriers can be added to the M4 carbine buttstock.
• Complete stock kits include stock adapter, M4 Carbine buttstock, Mesatac® Trego® pistol grip and push-button sling swivel.
• No gunsmithing required.