Question: The M1947 Johnson auto carbine was intended as a replacement for a .30 caliber semi-automatic rifle that was standard US service rifle during World War II, the Korean War, and a limited amount when?  

full_context: Document 1: Winchester model 30: The Winchester Model 30 was an experimental self-loading rifle offered to the United States War Department as an alternative to the M1 Garand. Winchester Repeating Arms modified the design to a selective fire Winchester Automatic Rifle after military field trials favored the Garand. Development had not progressed beyond limited-production prototypes when official interest faded at the end of World War II.
Document 2: M2 Hyde: The Hyde-Inland M2 was a United States submachine gun design submitted for trials at Aberdeen Proving Ground in February, 1941. Work was undertaken by General Motors Inland Manufacturing Division to develop workable prototypes of George Hyde's design patented in 1935. The model first submitted for trials in April 1942 was designated the "Hyde-Inland 1". Trials revealed the design was superior to the M1 submachine gun in mud and dirt tests, and its accuracy in full-automatic firing was better than any other submachine gun tested at the time. An improved "Hyde-Inland 2" was designated U.S. Submachine gun, Caliber .45, M2 as a substitute standard for the M1 Thompson in April, 1942. As Inland's manufacturing capacity became focused on M1 carbine production, the US Army contracted M2 production to Marlin Firearms in July, 1942. Marlin began production in May 1943. Marlin's production failed to match the trials prototype performance; and Marlin's original contract for 164,450 M2s was canceled in 1943 upon adoption of the M3 submachine gun. The M2 is chambered for the .45 ACP cartridge and used the same 20- or 30-round magazine as the Thompson. Its cyclic rate of fire is 570 rounds per minute. None of the approximately 400 manufactured were issued by any branches of the United States military.
Document 3: Knight's Armament Company SR-47: The SR-47 is a modern rifle based on the AR-15 family of rifles created by Knight's Armament Company for USSOCOM. Unlike the majority of ArmaLite-type guns, the SR-47 is essentially an AR-15 that fires the Soviet 7.62×39mm round from AK-47 magazines, which explains the "47" in the gun's name. The rifle was created after soldiers on long missions in Operation Enduring Freedom complained of running out of 5.56×45mm NATO ammunition for their M4 carbines but having plenty of captured AK-47 magazines. The SR-47 is basically an M4 that will accept standard AK-47 magazines rather than NATO STANAG M16/M4 mags, along with other minor modifications common to KAC's designs.
Document 4: Medium Tank M7: The Medium Tank M7 was originally conceived as an up-gunned replacement for the Light Tank M3/M5. The project was supposed to mount the same 75mm armament as the M4 Sherman while retaining the light weight and maneuverability of the M3 Stuart; however, during development the weight of the prototype surpassed the US Army's standard for light tanks and crossed into the medium category and was renamed. The M7 had significantly less armor than the M4 Sherman, boasted no greater firepower, and held only a slight advantage in top speed. For these reasons, and because the M4 was already battle-tested and in full production, the M7 was put aside shortly after completing trials.
Document 5: Type 97 automatic cannon: The Type 97 20-mm antitank rifle is a Japanese semi-automatic anti-tank rifle used before and during the Second World War. Adequate for the early part of its deployment, it was rendered obsolete by advancement in tank armor.
Document 6: M1941 Johnson machine gun: The M1941 Johnson Light Machine Gun, also known as the "Johnson" and the "Johnny gun", was an American recoil-operated light machine gun designed in the late 1930s by Melvin Johnson. It shared the same operating principle and many parts with the M1941 Johnson rifle and the M1947 Johnson auto carbine.
Document 7: Gewehr 41: The Gewehr 41 (German for: rifle 41), commonly known as the G41(W) or G41(M), is a semi-automatic rifle manufactured and used by Nazi Germany during World War II.
Document 8: FM57 rifle: The FM1957 is a Swedish prototype battle rifle based on the Ljungman Ag m/42 semi-automatic rifle. Along with the FN FAL, M14 rifle, Rk 60 and GRAM 63 battle rifle, it was in competition to replace the bolt action Mausers and the Ag m/42 rifles in Swedish service during the early 1960s but lost over the Heckler & Koch G3 (license built as the Ak 4 in Sweden). The FM57 therefore never entered serial production. The rifle was built in two calibers: the 6.5×55mm (standard in the Swedish Armed Forces at the time) and the 7.62×51mm NATO (which later replaced the 6.5 mm cartridge in Swedish service).
Document 9: Karabiner 98k: The Karabiner 98 kurz (] ; "carbine 98 short", often abbreviated Kar98k or K98k) is a bolt-action rifle chambered for the 7.92×57mm Mauser cartridge that was adopted on 21 June 1935 as the standard service rifle by the German "Wehrmacht". It was one of the final developments in the long line of Mauser military rifles. Although supplemented by semi- and fully automatic rifles during World War II, it remained the primary German service rifle until the end of the war in 1945. Millions were captured by the Soviets at the conclusion of World War II and were widely distributed as military aid. The Karabiner 98k therefore continues to appear in conflicts across the world as they are taken out of storage during times of strife.
Document 10: Gewehr 43: The Gewehr 43 or Karabiner 43 (abbreviated G43, K43, Gew 43, Kar 43) is a 7.92×57mm Mauser caliber semi-automatic rifle developed by Germany during World War II. The design was based on that of the earlier G41(W), but incorporating an improved short-stroke piston gas system similar to that of the Soviet Tokarev SVT-40, and it incorporated innovative mass-production techniques.
Document 11: M1 Garand: The M1 Garand is a .30 caliber semi-automatic rifle that was the standard U.S. service rifle during World War II and the Korean War and also saw limited service during the Vietnam War. Most M1 rifles were issued to U.S. forces, though many hundreds of thousands were also provided as foreign aid to American allies. The Garand is still used by drill teams and military honor guards. It is also widely used by civilians for hunting, target shooting, and as a military collectible.
Document 12: M1 carbine: The M1 carbine (formally the United States Carbine, Caliber .30, M1) is a lightweight, easy to use, .30 caliber (7.62 mm) semi-automatic carbine that was a standard firearm for the U.S. military during World War II, the Korean War and well into the Vietnam War. The M1 carbine was produced in several variants and was widely used by not only the U.S. military, but by military, paramilitary and police forces around the world. It has also been a popular civilian firearm.
Document 13: M1947 Johnson auto carbine: The M1947 Johnson auto carbine is a semi-automatic derivative of the M1941 Johnson machine gun. It was intended as a replacement of the M1 rifle but not accepted. The auto carbine never got past the prototype stage, only five of them ever being made.
Document 14: M3 submachine gun: The M3 was an American .45-caliber submachine gun adopted for U.S. Army service on 12 December 1942, as the United States Submachine Gun, Cal. .45, M3. The M3 was chambered for the same .45 round fired by the Thompson submachine gun, but was cheaper to produce, and lighter, although, contrary to popular belief, it was far less accurate. This myth stems from a US army training film portraying the M3 as more accurate than its counterparts. The M3 was commonly referred to as the "Grease Gun" or simply "the Greaser," owing to its visual similarity to the mechanic's tool.
Document 15: Assault rifle: An assault rifle is a selective-fire rifle that uses an intermediate cartridge and a detachable magazine. Assault rifles were first used during World War II. Though Western nations were slow to accept the assault rifle concept, by the end of the 20th century they had become the standard weapon in most of the world's armies, replacing full-powered rifles and sub-machine guns in most roles. Examples include the StG 44, AK-47 and the M16 rifle.
ground_truth: Vietnam War