The UD-42 was originally the design of Carl "Gus" Swebilius, who was at the time (1940) working for the High Standard company. It failed to attract interest form the US military, but was appealing to the Dutch government for arming their East Indies colonies. A contract for 15,000 guns was signed...

When the Swedish military decided that 1937 seemed like a pretty good time to be getting some new submachine guns, they arranged to purchase a version of the m/31 Suomi from their Finnish neighbors - which they called the M-37. Since the standard Swedish military pistol (the Husqvarna m/07) was c...

When World War Two began, Australia saw little threat of invasion from Germany (obviously), and sent a substantial number of firearms to Britain to help arm the Home Guard there, which was seriously concerned about the possibility of a German invasion. When Japan and Australia declared war in Dec...

The story of the Austen submachine gun did not end when the Mk I guns were pulled from combat service in 1944. The manufacturer continued to work on an improved version, which would be ready in 1946, after the end of World War Two. Only 200 were made total, and they were both adopted and declared...

The Model 57 is a select-fire carbine made by Beretta around the .30 Carbine cartridge. It uses a newly designed magazine much more durable that the American M1/M2 Carbine magazines, and has a tilting bolt locking system coupled with a gas tappet style of piston. Many of the features are distinct...

Andries Piek was a farmer in South Africa in the late 1970s when he mail ordered an LDP 9mm carbine from Rhodesia. The gun was impounded by South African customs, and Piek wound up designing modifications to the gun to meet South African laws. He was contracted to do this to all the LDPs sent to ...

The Australian Owen submachine gun was once of the best overall SMG designs of the Second World War, and when Australia decided to replace them in the 1960s, the new F1 design have big shoes to fill. The basic configuration of the top-mounted magazine remained, but coupled with elements of the St...

George Lanchester was the engineer responsible for originally reverse engineering the German MP28 submachine gun for production by the British, under the designation Lanchester. Once he finished that design work, the gun was put into production by the Sterling Engineering Company, and Lanchester ...

At the end of World War Two, the Paris Police decided that they needed a few different features on a police submachine gun than the then-standard MAS 38 offered. A few hundred were converted to the new police requirements, interestingly mirroring the characteristics that would be used a few years...

After the adoption of the MAT 49 as the standard French military submachine gun, elements of the French security services also adopted it to replace the 7.65mm MAS 38 submachine guns. These included the Paris Police, who developed a special variation of the MAT 49 for their use, designated the MA...

The MP40/I was an experimental modification of the MP-40 submachine gun developed by the Erma company (we think) in late 1942. It was presumably developed in response to complaints of Soviet fire superiority with SMGs because of their large drum magazines (and also the larger number of SMGs used ...

The MP5 is widely considered the best submachine gun ever made, for its reliability, its handling, and it's closed-bolt delayed-blowback action. It is so widely praised, in fact, that H&K's efforts to replace it with less expensive polymer submachine guns have largely failed, as their customer si...

The One submachine gun is one of the ugliest SMGs ever designed, and yet also one of the most beloved by its users. The original basis for the gun was a .22 rimfire submachine gun designed by 23-year-old Australian Evelyn Owen. That prototype was found by his neighbor Vincent Wardell after Owen ...

The PM-63 Rak is a pretty interesting Polish Cold War machine pistol or personal defense weapon. It fires from an open bolt, but uses a slide like a pistol rather than a bolt in an enclosed receiver like a typical SMG. There are several other interesting elements to the design, so let's take a cl...

Whether it is described as a machine pistol, a submachine gun, or a personal defense weapon, the PM63 Rak is really not the best examples of this sort of thing to actually shoot. The open-bolt/slide mechanism is very cool from an engineering and design perspective, but does in fact have a tendenc...

In 1983, Dennis Tippmann started a company making beautiful half-scale Browning machine guns, fully functional and chambered for the .22LR cartridge. This was a pretty cool idea, and the guns remain popular today because of their mechanics and easy transportation and cheap shooting cost - but th...

This the fairly modern Chinese CS/LS2 - the 9mm Parabellum export model of the 5.8mm QCW-05 submachine gun. It takes most of its design cues form the QBZ-95 rifle, as you can see form the grip layout. It is a bullpup, with a right-ride ejection port that cannot be swapped. It is a bullpup style d...

Thanks to H&K and Trijicon, I have a chance to do some shooting with an MP7A1 PWD today. The MP7 is unusual for a gun of its size and configuration in having a fully locked operating system; essentially a G36 scaled down to 4.6x30mm. This allows the gun to be lighter, as the action is not depende...

In the 1980s, the US Navy requested a new submachine gun to replace the MP5 then in use. In particular, the Navy wanted a gun that was optimized for use with a suppressor. H&K built two models of experimental guns in the 1980s to meet this request, creatively named the SMG and SMG II.

Both gun...

The Z45 was a submachine gun designed during World War Two by the Start firm in Eibar, Spain for export sale to Germany as well as domestic Spanish use. It was heavily based on the MP40, including the same stock, telescoping mainspring guide/cover, and disassembly method as the MP40. To this, how...

In the 1960s, the Sterling company began to worry about the prospects of continued sales of the Sterling (Patchett) SMG, especially in light of new competitors like the H&K MP5. Its chief design engineer, Frank Waters, created the S11 as a gun to replace the classic Sterling. The S11 was based on...

During the 1930s, Sweden acquired an assortment of different submachine guns, including Bergmanns, Thompsons, and Suomis. As World War Two progressed, they decided that they really needed to standardize on a single caliber and model of gun, and requested designs from both the Carl Gustav factory ...

The Viper Mk I was an experimental submachine gun developed in the UK for use by military policemen in post-WW2 occupation West Germany. It was a simplified Sten gun (full-auto only, without the semiauto option normally included in the Sten trigger mechanism) put into a wooden housing. It was int...

During World War Two, Canada supplied some 73,000 Sten guns (made by the Long Branch arsenal) to Chinese Nationalist forces in an effort to help them fight the Japanese. These Stens were standard MkII pattern guns, chambered for the 9x19mm Parabellum cartridge. However, many of these were eventua...