The ESS is MDT's most modular rifle chassis. The chassis base, buttstock and forend options seamlessly integrate to create a custom rifle chassis to suit any shooter. The customizable options for this bolt action chassis make it the perfect rifle stock replacement. The MDT ESS chassis is designed with its own buttstock for perfect ergonomics and is designed to use AR15 style pistol grips (purchased separately), and allows for customization with a wide variety of accessories. The ESS Chassis System includes chassis, buttstock and 15" forend. The most significant change is the incorporation of the ESS chassis specific buttstock interface, rather than the traditional AR pattern interface. This allows us to place the pistol grip in optimum relation to the trigger, while still allowing the shooter to choose from the wide variety of AR pattern pistol grips which suit their preference.