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A slight bruise or a small quantity of dust or dirt inside a loaded magazine could render it unserviceable. The manufacture of the Swedish pattern 50 rd. Magazines, including drums, were the same for both models. Huge quantities of magazines were worn out or lost during the war. For example Finnish ranger patrolmen classified the 40 rd. Empty drums were actually thrown away because they were almost impossible to refill during battle. In the first years of the Fifties there were only two or three magazines for each gun.
Just a lack of perforations in the jacket and compensator may reveal the difference The magazines are Lapua-made 36 rd. The formerly German-owned Tikkakoski Oy was occupied by Russians and made only sewing machines and vacuum cleaners. The know-how and machinery for manufacturing of drum magazines was under the control of the Arch Enemy.
It became necessary to adopt an entirely novel type of magazine. A new and interesting feature was the wide "mouth", which enabled easy filling of the magazine by pushing cartridges down, sideways. No special loading tools are necessary. The pressure of the feed spring was just reasonable - no longer excessive. The strength of one's fingers was usually sufficient to fill the magazine with 30 to 35 cartridges without undue effort. The magazine was found to be as durable and reliable as the 70 rd.
The first Finnish copies were made by Ammus Oy in The run of batch was, fortunately, only a hundred magazines; They were made carelessly and without all the necessary know-how. Swedish-made sample magazines, bought for the sake of comparison, were found to be of good quality and their price was much lower due to steady mass production. This quantity was but one fifth of the needed quarter of a million 36 rd. The Lapua-made 36 rd. Conscripts trained as submachine gunners during the Sixties and early Seventies including this author received two battered 70 rd.
In there were 65 rounds of bulleted cartridges issued for the training of each submachine gunner during seven months' military service. These had top-mounted box magazine, without option for use of drum magazines. Bipod was usual outfit. Persia is nowadays known as Iran. These had a top-mounted box magazine and no option to use drum magazines. A bipod was usually fitted. These gimmicks were soon found to be unnecessary.
The designer A. Lahti did not like the compensator because the oblique front end of the barrel jacket was found to be as efficient a reducer of muzzle climb as any adaptation of the "Cutts Compensator". The muzzle pressure of a submachine gun is actually too low for any noteworthy compensating effect. Solid powder and primer residue could become trapped in the chamber of the projecting compensator and reflux thru the bore into the receiver. The sticky mass of condensed water, carbon and salts could literally paste onto the snugly fitting breech-bolt, causing misfires and accidental firing.
Misfire outdoors in the cold could release the breech-bolt from the grip of the sear and, if the gun was then warmed, when a loaded magazine was mounted, it might suddenly fire when the residue holding the breech-bolt thawed. It was not just advisable but strictly mandatory to remove the magazine from a "frozen" submachine gun before any attempt to melt the breech-bolt loose by warming or shooting a cartridge, loaded manually into the chamber, was made.
As soon as possible it was essential to field-strip the gun and clean its receiver, breech-bolt and compensator. The enraged A. Lahti attempted to find out who the inventor of the compensator was and to have him charged in a military court, but to this day the identity of the "genius" responsible remains strictly classified.
On the other hand the Civil Guard demanded normal short jackets for guns ordered for their members until when the Russians forced the government of Finland to suppress the Civil Guard. The phrase "any Guardian is a better authority on firearms than all Finnish Army generals" was not just an idle boast. This designation is incorrect and misleading because there was an independent "model ". The "Korsu-Suomi". This Bunker Suomi or pill-box gun is a highly specialized weapon for shooting through the narrow, horizontal firing slits of hemispherical steel bunkers, the so-called "Mannerheim's helmets", and concrete bunkers built along the so-called Mannerheim Line.
It was impossible to use sights and powder gases threatened the gunner with nitrogen oxide or carbon monoxide poisoning. The design of the Bunker Gun was begun in August Before the Winter War there were two lengths of "duck-bill" barrel jackets with fixed, side-mounted sights and a welded frame for a pistol grip. Experience indicated the longer jacket mm was better than the shorter one mm for eliminating muzzle flash and evacuating powder gasses from the bore before opening the breech-bolt between shots.
Before Finland's Third Independence War the construction of the pistol grip was simplified so that it was possible to mount either a normal stock with shoulder butt or a pistol grip with a forked tang to receiver of gun. The first phase of the war was, however, a Finnish invasion of the most favorable positions for defence against Russia. Although there were no front sights above these jackets the submachine gunners could soon master their guns without any use of sights at all, just like well-trained skeet-shotgunners.
The jackets were mounted on Finnish tanks, of the Christie or Vickers type, and the Bunker Gun was mounted in that jacket just before driving towards the battlefield. Only 31 jackets, serial numbered along with pistol-grip submachine guns, were assembled in July No further submachine guns with firing port jackets were needed because the Russians brought the Finnish tank corps a more than sufficient quantity of Degtaryeva Tankovoy machine guns during the Winter War. These DT tank machine guns of caliber 7.
There were more than six Tankovoy machine guns for every Finnish armored vehicle. Surplus DTs were issued to infantry units, equipped with bipod and sights. Our photograph shows the presumably only privately owned Tank Suomi submachine gun jacket. The assault rifle is today the general-purpose instrument of the Finnish armed forces.
An unknown quantity of submachine guns is still stowed up in depots but many of them are being sold to collectors. Spare parts and unfinished forgings have also been made available. However modern doctrine favors a one caliber system of ammunition as far as is possible. The assault rifle is able to do the duty of a submachine gun.
So why carry two kinds of individual firearms with different cartridges? The Last Model The availability of unperforated, semi-finished forgings of barrel jackets made possible the creation of some prototypes of the Barrel Unit "Model SS". The abbreviation comes from " Suhina-Suomi " Sighing Suomi. The unit is of a telescopic construction. Twenty cupped baffles, similar to those of famous Maxim Silencer, are stacked into the front end of inner suppressor sleeve.
This sleeve is fastened by a threaded cap into the jacket and is removable as one part. The barrel is centered into the sleeve by a perforated support and a solid septum. A snugly fitting shoulder in front of the barrel flange centers it into the jacket. Powder gas, bled from barrel perforations, fills the space between the sealing shoulder and the septum known as the "blowback intensifier chamber".
The bullet, emerging from the muzzle, flies through the stack of baffles. The muzzle blast hits the conical diffractor and the curved reflector, refluxing to an expansion chamber around the barrel. When the bullet emerges from the mouth of the suppressor, powder gas is trapped in the expansion chamber and into the spaces between the baffles.
This part of the gas flows slowly out of the suppressor mouth with a muffled "sigh". Another volume of gas, trapped into the blowback intensifier chamber, escapes into the bore through barrel perforations. The rapid reflux of the gas accelerates the rearwards movement of the breech-bolt. The use of a slightly shortened recoil spring may be necessary in order to avoid uncontrolled fire when shooting the least powerful factory-loaded cartridges or subsonic handloads made for guns with a traditional muzzle-can suppressor.
Juha Hartikka of BR-Tuote , Joensuu, Finland a famous manufacturer of suppressors and other equipment related to firearms. Old soldiers never die and firearms designed to be "everlasting" do not fade away easily. On the History of Finland and Submachine Guns. The word "Suomi" means "Finland" the name of the country in Finnish.
Limited company is "aktiebolag", abbreviation "AB" in Swedish. Many Finnish companies use both Finnish and Swedish abbreviations in their names, e. Oy Tikkakoski AB, because both of these languages are officially used in Finland. Both sides were aided by Russians. The White Army and auxiliary troops from the Imperial German Baltic Sea Division liberated southern Finland in a couple of weeks before a never-to-be-forgotten triumph parade in Helsinki on May 16, It was the first time when a heroic Finnish people stopped the Great Red World Revolution but it would not be the last one.
Vengeful Russian Communists, along with Finnish Bolshevik refugees residing in Soviet Russia, tried to conquer Finland in two weeks starting on November 30, Finland stood alone but our people were able to stand and struggle until March 13, In the earlier Soviet Union's history writing this campaign was almost entirely forgotten.
Both Finns and Russians knew that the armistice after the Winter War was nothing but a frail truce. Some days after the start of the German "Operation Barbarossa" the Russians begun air-raids against more than twenty densely populated communities in Finland. In late June it was realized that a state of war existed between Soviet Russia and Finland. As an ally of Germany Finland was able to conquer the territories lost to Russians after the Winter War and push still forwards to more favorable defensive positions.
This Third Finnish Independence Struggle became a kind of trench warfare by the late or early On June 10, when the Germans were obviously already losing the Second World War the Russians were able start a massive attack on Finnish troops. The retreat of the Finnish armed forces ended in July or early August The Russians were suffering huge losses of military forces, ordnance and transport, including armored vehicles, due to Finnish defensive actions.
The wave of Worldwide Red Revolution was once again broken on the rock of the determined Finnish people, once again supported by the Germans - just as during the last weeks of the First Independence War of Third Independence War of Finland so called by the then President Risto Ryti in is usually known as the Continuation War, because it was an inevitable continuation of the Winter War, which in itself was a continuation of the Independence War of The last phase of it was an "infamous war" against the Germans retreating from that area of Finland.
The Finns were unwilling to harass their former comrades in arms but it was Red Russia which dictated the rules of Finnish politics from September until August , the bitter end of that Reign of Wickedness. There is no reliable evidence to confirm whether submachine guns were used in the war.
The production of the Bergmann MP I had just been started in April and all guns were needed in the European trenches. The Winter War taught the whole industrialized world to appreciate submachine guns. Finland focused on sales to South America and the Baltic States.
The Suomi KP was also manufactured under license. It was chambered for the weak 9mm Browning Long [9x20mmSR] cartridge, which required a rear-slanting magazine well. It had a quick-detachable barrel system and an arrangement whereby the spring was mounted inside the bolt in order to make the gun shorter.
The Carl Gustav round quad-column "casket" box magazine was lighter and more reliable than the original Lahti round "ranger" drum magazine. The Russian company PUFgun makes a 5. The round Lahti drum was copied by the Soviets in a scaled-down 7.
A specialized bunker version was also produced in very small numbers a total of built in , the barrel shroud end of which was thinner and flattened to allow firing through the narrow ports of defensive bunkers. An even rarer version " kp 31 psv"  was produced for use as a secondary gun in the firing ports of Vickers Alt B Type E 6-Ton tanks, but only a few dozen were built before production was canceled due to the outbreak of the Winter War.
Production never resumed, as captured Degtyaryov DP machine guns proved far superior in this role. Like the bunker version, the tank version had a pistol grip and no buttstock, and it could be quickly removed from the tank and fitted with a standard barrel shroud for infantry use if needed. The tank version remained in the Finnish Army's inventory through the s, despite the tank it was designed for being retired in Stroop report during Warsaw Ghetto Uprising in May From Wikipedia, the free encyclopedia.
Submachine gun. Retrieved Modern Firearms. Retrieved 12 February Gunwriters in Finnish. Small Arms Review. Militaria Magazine in French. Italian partisan weapons in WWII. Schiffer Military History. ISBN Finnish infantry weapons of World War II. Lahti L Tikkakoski — and Sako Tikka brand —present firearms.
Hidden categories: CS1 Finnish-language sources fi CS1 French-language sources fr Articles with short description Short description matches Wikidata All articles with unsourced statements Articles with unsourced statements from February Articles containing Finnish-language text Articles with unsourced statements from January Articles with unsourced statements from October Commons category link is on Wikidata.
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Suomi or Mkb for Moscow axis? What are the up's and downs of both of these? I just got the. michaelkorstote.com › › Fortifications, Artillery, & Rockets. Re: The Organisation Todt-project "PETER" (MKB Suomi) Hello, Terrific, Natter!:thumbsup: I especially love the blatt Nr9 showing the profile.