Blaser QD Saddle mount Zeiss Internal rail scopes Blaser Saddle Mount for Zeiss ZM & VM Scopes with patented Zeis integrated rail. With a QD-Mount, this allows the scope to be detached and/or replaced as often as required without affecting zero. The Saddle Mount also facilitates the exchange of rifle scopes with or without a rail. Blaser Quick Detach Saddle Mount for Zeiss Internal Rail Scopes