New Rubber Grips - The GS Mini has a new rubber foregrip cover and re-designed trigger frame grip for superior handling with or without gloves. New Regulator/ ASA - The GS series comes with a new low profile regulator with a lever actuated on - off ASA. No more chewed up O-rings when you least need it! Weatherized Board and Housing - New weatherproof rubber membranes over the board's foregrip housing and buttons prevent moisture from reaching the marker's electronics. New 2 Screw Size Design - The engineers at Empire reduced the number of Allen screw sizes in the Mini GS to just two. No more hunting for the right Allen key; just two and you're good to go! Microswitch Trigger Activation - The Mini GS boasts a new microswitch over the Hall Effect system for a fast and positive interface with your fingers. Delrin Trigger Bushing - A new self-lubricating bushing reduces friction for a smooth trigger pull. Stronger Clamping Feed Neck - A new glass-filled nylon composite feed neck with aluminum clamping lever is both stronger and lighter than the previous metal feed neck. Classic Mini Compatible - The Empire Mini GS accepts all your favorite classic Mini internal upgrades and components.