HAMMERLI AIR GUN TRAINER Description
4.4mm cal. precision lead balls, SP, SS, SL, A sidelever, spring piston powered insert designed to instantly replace the bolt in the Swiss Kar. 31 service rifle, with its own barrel which fits into the firearm barrel. Uses the frame, stock, trigger mechanism, and sights of the host rifle; its cocking action mimics that of this straight pull bolt action rifle, developed in circa late 1950s; machined and blued. Ref.: Smith (1957, pp. 155-166, 168). 28 in. OAL (fits into K31 rifle w/OAL of 43 in.), 1 lb., 250 FPS. Marked Hämmerli Trainer, SN, and model of host firearm. A 6 shot, gravity fed, CO2 version definitely was also patented and developed for the German Kar. 98 service rifle, but actual production may not have been commenced; SN 10 is the highest number reported to Blue Book as of March 2005. A number of experimental and prototype versions apparently were made for other rifles and even pistols such as the German P38. Evidently produced only for the Mauser 98 and the Swiss Kar. 31 firearms, extremely scarce, most specimens surviving WWII reportedly were lost in a fire. Ref: W.H.B Smith (1957).