Mesa Tactical's LEO® Telescoping Stock Kit for 12-GA and 20-GA Remington 870 shotguns, is a versatile telescoping stock system which enables tactical operators to instantly adjust the length of pull of the telescoping stock in order to accommodate differences in individual body sizes, or when wearing body armor, without compromising the safest shooting position. Mesa Tactical’s collapsible stock kits and adapters install AR-15 adjustable buttstocks and pistol grips onto the venerable Remington 870 and Mossberg 500/590 shotgun platforms for the ultimate in tactical shotgun configuration performance. The LEO telescoping stock system also incorporates a new and advanced sling attachment method, which accommodates a wide variety of optional sling styles.

The concept is simple: the shotgun stock is replaced by an adapter that mimics the stock attachment point of an AR-15 lower receiver. This adapter accepts an AR-15 receiver buffer tube. The AR-15 collapsible stock and pistol grip can then be reliably attached to the shotgun.