The S&W Model 1940 Light Rifle is an interesting bump in the road in S&W's history. Too much to fully cover here, however in a nut shell = The Brits needed an assault type weapon for their Commandos and came to S&W to manufacture one, based on some loose specifications regarding the cartridge the Brits wanted, a 9 mm Luger style round. S&W made the finest revolvers in the world but had never made rifles ( The gun is actually a repeating pistol, as it only has a 9 in. barrel) , so S&W designed a semi-automatic weapon and made it like one of their usual fine handguns, to fire the 9mm Luger round. 9mm Luger, that is, as known to American shooters, that is. Unfortunately the Brits version of a 9mm Luger was more powerful, and they forgot to tell S&W, so the Brits soon had problems with the gun's functioning with the higher power rounds. The Brits then cancelled the contract and wanted their money back. S&W was broke and about to fail financially, so no way they could refund the $1,000,000 paid them. A deal was worked out to pay off the refund with shipments of S&W handguns, and the Brits tossed their Model 1940 Light Rifles in the English Channel. A few survived in the attic at the S&W plant and later in the 1970s they became the Honey Hole for S&W Collectors, due to Roy Jinks convincing S&W management not to destroy them, but sell them only to members of the S&WCA. The nomenclature of "Light Rifle" was invented by the Brits and "Light" refers to the caliber, not the weight, as 9mm is considered a light round as compared to other military rounds in the Brit's arsenals. The gun is very heavy for it's size, weighing close to ten lbs, with a full magazine. I occasionally shoot mine and it's a real attention getter at the range. Hope that helps. Ed.