CZ Custom Short Reach Double Action DA/SA Trigger Kit One Size. For use in B model (pistols with firing pin block). Specifications for CZ Custom Short Reach Double Action DA/SA Trigger Kit: Manufacturer: CZ Custom Size: One Size Gun Type: Pistol Package Contents: CZ Custom Short Reach Double Action DA/SA Trigger Kit CZ Custom 10382: Short Reach Double Action DA/SA Trigger Kit One Size