Dredger

A one page pin-up featuring a cutaway diagram of a 

Smith & Wesson .44 Magnum as used by the banned 

comic Action's star feature Dredger. 

The character was created by John Wagner who went on to 

create Judge Dredd for 2000AD. 

Dredger was basically a British version of Dirty Harry.

Source : http://www.bookpalace.com/acatalog/Home_20th_Century_Illustration_Art_1070.html