The Mark IV model does not have a loaded chamber indicator on the side of the receiver or an internal key lock. The eye-appeal of the Ruger MKIV Hunter is outstanding, in my opinion. Squirrel Warning - Readers may find some images disturbing: The Ruger Hawkeye Hunter and the 6. 629-6 Stealth Hunter (Matte Black) SKU 170323. Ruger mark iv hunter bass pro In commemoration of its 70 th anniversary, Ruger has released a Limited Edition Mark IV Standard pistol.