| MG 15 machine gun | |
|---|---|
 | |
| Type | Aircraft machine gun |
| Place of origin | Weimar Republic or Nazi Germany |
| Service history | |
| Used by | Nazi Germany Imperial Japan (Type 98) Korean People's Army (Type 98) Romania Turkey |
| Wars | World War II Korean War |
| Production history | |
| Designer | Theodor Bergmann |
| Designed | 1932 |
| Manufacturer | Bergmann (Weimar Republic), Rheinmetall (Third Reich) |
| Specifications | |
| Mass | 12.4 kg (27 lb) loaded with gunsight and cartridge bag |
| Length | 1,078 mm (42.4 in) (without attachments) |
| Barrel length | 600 mm (24 in) |
| Cartridge | 7.92×57mm Mauser |
| Caliber | 7,9 (7.92+0.04) |
| Action | Recoil-operated |
| Rate of fire | 1,000–1,050 rpm |
| Muzzle velocity | 755 m/s (2,480 ft/s) |
| Feed system | 75-round double-drum magazine |
| Sights | Various types |
The MG 15 was a German 7.92 mm machine gun designed specifically as a hand-manipulated defensive gun for combat aircraft during the early 1930s. By 1941 it was replaced by other types and found new uses with ground troops.
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Transcription
History
The MG 15 was developed from the MG 30, which was designed by Rheinmetall using the locking system invented by Louis Stange in the mid to late 1920s. Though it shares the MG 15 designation with the earlier gun built by Bergmann, the MG 15nA (for neuer Art, meaning new model having been modified from an earlier design) has nothing in common with the World War II gun except the model number. The World War I gun used a tipping lock system while the WWII aircraft gun uses a rotating bolt and lockring. The World War II MG 15 was used in nearly all Luftwaffe aircraft with a flexible-mount defensive position.
It was a modular design with various attachments that could be quickly attached or removed. The bolt mechanism acted as a traditional open-bolt machinegun design, in which the bolt will slam forward when empty, and require re-cocking either before or after a new magazine was fitted in order to be able to fire again. [1]
The MG 15 fires from an open bolt, meaning that the bolt stays back when the gun is ready to fire, and is thus unsuitable for "through the propeller" synchronized forward firing on a fuselage mount.[citation needed] Pulling the trigger releases the bolt and allows it to go forward, stripping a round from the magazine. The bolt continues pushing the round into the chamber and locks up when the lockring rotates and locks the bolt and barrel extension together. At this point the trip lever releases the firing pin and the gun fires. Recoil pushes the barrel, lock and bolt backwards until the lockring hits a cam that rotates it unlocking the bolt and barrel. Inertia carries the bolt backwards until the base of the fired case hits the ejector, flinging the empty out of the receiver. If the trigger is held down the cycle will continue. If the trigger is released the bolt will remain in the rearward position.
The "saddle-drum" magazine was so called because it straddled the gun, with two inversely symmetrical spiral drums that fitted on either side of the receiver. The 75 rounds of ammunition (not 150 as is often mistakenly claimed) was shared evenly by both drums and as the gun fired, converged under spring tension towards the centre and from thence passed downwards into the action. The MG 15, having a firing rate of over 1,000 rpm, could empty the magazine in 4.5 seconds or less, and typical practice was to provide at least 10 spare magazines for each gun on the aircraft. This still left the gunner with the problem of reloading in combat, offering a brief opportunity for enemy fighters to attack with impunity.[2]
Starting in late 1940 the MG 15 was replaced by the belt-fed Mauser 7.92 mm MG 81, MG 81Z (twin-MG 81), MG 131 13 mm machine guns, or MG 151/20 20 mm cannons. As they became redundant in their original role, many MG 15s were modified for infantry use, and a carrying device was also issued that held three of the saddle-drums. (There are a number of pictures showing the guns, both aircraft and ground versions, with 25-round magazines from another machine-gun, the MG 13, however the magazines are not compatible with the MG 15.) The official total of conversions was about 17,648 by January 1, 1944, although the actual number may have been greater.
The license-produced MG 15 was used in the Japanese aircraft as the Type 98 flexible-mounted machine gun and as the Type 1 in the Imperial Japanese Navy.[3] Type 98 machine guns were also used by the Communist forces during the Korean War.[4]
Specifications
- Calibre: 7.9 +/- .04 mm
- Cartridge: 7.92×57mm Mauser
- Round weight: 35.5 grams (cartridge 24 grams, bullet 11.5 grams)
- Muzzle velocity: 755 metres per second (2,480 ft/s)
- Rate of fire: 1,000 (possibly up to 1,050) rpm
- Length : 1,078 millimetres (42.4 in) (without attachments)
- Barrel length: 600 millimetres (24 in)
- Weight unloaded with gunsight and cartridge bag: 8.1 kg (18 lb)
- Weight loaded with gunsight and cartridge bag: 12.4 kg (27 lb)
- 75-round magazine unloaded: 2.27 kg (5.0 lb)
- 75-round magazine loaded: 4.24 kg (9.3 lb)
- Weight of the 2-part loader: 0.72 kg (1.6 lb)
Gallery
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Debris of a downed Heinkel He 111 along with the barrel of an MG 15. Polish Army Museum, Warsaw (2006). -
World War II-era German MG 15 type mounted aboard aircraft with anti-aircraft sight present near the tip of the barrel and lacking the infantry-variant butt-stock at the rear
References
Notes
- ^ "MG15 Quick Fire". Youtube. Mortar Doc. Retrieved 16 June 2022.
- ^ Andy Saunders (2020) RAF Fighters vs Luftwaffe Bombers, Page 61. Osprey Publishing.
- ^ "Archived copy". Archived from the original on 2012-03-10. Retrieved 2010-08-06.
{{cite web}}: CS1 maint: archived copy as title (link) - ^ Kinard, Jeff (2010). "Machine guns". In Tucker, Spencer C.; Pierpaoli, Paul G. Jr. (eds.). The Encyclopedia of the Korean War: A Political, Social, and Military History. Vol. 1. A-L (2nd ed.). ABC-CLIO. p. 535. ISBN 978-1-85109-849-1.
Sources
- Hofbauer, M. (1998-08-29). "Panzerfaust WW II German Infantry Anti-Tank Weapons Page 5: Machine Guns". Archived from the original on 2009-10-27.
- MG 15 in private collection, forum site
- Imperial Japanese Weapons Archived 2020-10-02 at the Wayback Machine
External links
- Forgotten Weapons – The MG-15: A Flexible Aircraft Machine Gun Pushed into Infantry Service on YouTube
This page was last edited on 4 April 2024, at 19:01