Fits one Kolpin Gun Boot 6.0 Impact. Lightweight and extremely durable. Easily adjustable without the use of any tools. Offers precision gun angle adjustability. Requires Gear Rail for installation. Commander, Commander MAX 2020 & prior, Maverick, Maverick MAX (except Turbo, X ds Turbo, X rs Turbo 2016 & up models), Defender, Defender MAX