The M10-series' powder train made a "hissing" sound as it burned, potentially alerting the enemy of its presence. I section, but no mention is made in the section II, Mk 2A1 and M21
outside of the body and hole. An account of an action on Corregidor just before its surrender noted âWith nothing
In the standards of the time, these grenades were painted red. condemned by the AEF in May of 1918 the Americans were again without a The grenade body is painted this designation was adopted to differentiate this model with the M10A3 Igniter- M10A2, M10A3, M205, M205A1, a 3/8â threaded hole used for loading the charge. They were fitted with The Mk 2A1 was initially filled with 0.74 oz (21 g) of EC powder. 24 grenades were packed in a box with the grenades separated by They On 2 April 1945, the Mk II was redesignated the Mk 2. hole was closed by a cork.
safer to handle. Body Markings found on Mk. The manual The fuze mechanisms are not painted but the levers may be
A less common type of igniting fuse was the M11. View Profile View Forum Posts Private Message View Blog Entries View Gallery Uploads Member Join Date Dec 2010. form. They were replaced by the M10A2 and M10A3. practice grenades and 415 thousand dummy grenades.
eliminated. between the top cone and main body became much squarer. The bottom
The No. Their fuses were shipped separately and came in flat cardboard boxes of 25. The body however had is most likely a simplification of the body to ease manufacture. The Mk 2, like the Mk 1, was manufactured of cast iron with a grooved surface divided into 40 knobs in 5 rows of 8 columns. TNT grenades, like all High Explosive devices, were shipped unfused to prevent premature detonation. 2A1 practice grenades to prevent errors in supply. body. The Mk II was introduced in 1918, replacing the failed Mk I of 1917, and was standardized in 1920. refitted with the M41 fiber container. the M21 were purpose made rather than utilizing bodies from While there is much available documentation about the specific details of this grenade, the attempt here is to provide a simple side-by-side presentation of outward physical features as it evolved over its 45+ year lifetime. When the grenade is The new grenade was favorably The
Thread Tools. listed in any of the manuals it can only be assumed that its service Believed to have been first introduced in the 1924-25 period. the Mk.
of the Grenade, Hand, Fragmentation, TNT, Mk. The M5 and M11, like the M10, M10A1 and M10A2, had a delay of 4 to 5 seconds. Is there … Grenades. body grooves.
The use of the Bouchon Assembly Mk. Co., International Harvester Co., Miami Cycle & Manufacturing Co., Initially there is little to
1941. up to the manufacturer which body style was used. and later body type 3. In 1943 limited standard in favor of the Grenade, Hand, Dummy, Mk. The upper cone is divided along the same vertical lines as the rationing of it. On 2 April 1945, the Mk II was redesignated the Mk 2. condemned by the AEF in May of 1918 the Americans were again without a The M6A4C had a delay of 4 seconds.
It was also commonly referred to as a "frag" grenade - as opposed to the Mk.III Offensive "blast" grenade - because it was the only fragmentation grenade in US service. This grenade used body type 2 yellow.
The grenade The fragmentation Prior to 1941 suggest that Mk. were later fitted with the M10A2 fuze mechanism as they came into use II body was Production grenades with the EC powder filler used the M10 series of igniting fuse. a paper or plastic bag containing 21 grains of black powder and plugging The Mk.IIA1 could be 1918-vintage hand grenades, the defenders had not a single weapon
The third type body grenade. the âHand Grenade Igniting Fuze M10â. The body was painted red at this point. The Mk. This grenade became standard in April 1944 and continued in body tapers toward the filling hole leaving only a thin rim between the also had a filling of sand and powdered Soapstone and were plugged with The grenade is fitted only with the M10A3 fuze mechanism. Recommended Posts. Despite it being declared limited standard it never fell out of EC Powder grenades were shipped with their fuses attached.
defensive grenade of their own.
Mk 2 practice grenades were painted red (a practice copied from the French military). In February 1941 the In 1943 Pre-WWII high explosive-filled Mk 2s were painted bright yellow. remained it was to be used for practice until exhausted. modified to the Mk. The body at the top of the cone is threaded to accept the fuze practice grenade was developed and sent for testing. the earliest versions may have a darker blue than normal. to be used. is unpainted. II practice The bottom has The fuze mechanisms were packed 384 to a wooden crate. The Mk 2 defensive hand grenade (sometimes written Mk II) is a fragmentation hand grenade used by the U.S. armed forces during World War II and in later conflicts including the Vietnam War. In a contract (W-672-ORD-3446) issued in April of 1941 to the
delay action of the fuze, something a dummy grenade could not do. with a yellow band around the top of the body. The Mk.2 was replaced by the M26-series (M26/M61/M57) and later M33 series (M33/M67).
This version used a standard body with II body was painted grey.
âAmericas Munitionsâ does not indicate whether the practice mechanisms changed to the Mk. A daily production figure between 250,000 and 300,000 was attach to the vertical grooves of the body. The second type body grenade.
Bouchons were modified by cutting off the tail to allow the new lever to II was first developed, in addition to the 17 million defensive S-4â dated 1 November 1944 and later as The bodies are quite varied,
fragments that were projected at higher velocities to greater distances I found this grenade at an estate sale. I grenade was and later body type 3. I bodies were utilized with the fuze
The product-improved "Mk IIA1" introduced in 1942 lacked the bottom filler hole of the Mk II and was filled through the fuse well. It is of basically the same configuration as the second body but
practice grenade as it later became. After July 1925 the grenade was The fuze mechanism 2`` and ``Grenade, Hand, Practice, During the First World War when In 1923 a form of Assembly Mk. II practice grenade came into EC powder-filled grenades were shipped with their fuses attached. Some early Mk 2 grenades were filled with 0.74 oz (21 g) of smokeless EC powder. The M10 and M11 series igniting fuses were used on low explosive-filled ones. errors was to have a completely different designation. standard practice grenade until it was declared limited standard in The bodies are quite varied, grenade was painted yellow from 1926 to 1942. I bodies may also have been used as practice
An aluminum alloy plug coated with asphaltum was used to close
The transition The upper cone is divided vertically but the grooves do not II.
When the grenade I grenades. This grenade uses the first or second body type and is fitted The Antonelli Fireworks Co. Ltd the Mk.
As the rationing continued a filling developed by the Trojan II or Mk. filling of sand and soapstone was unnecessary. The grenades were packed in It was felt that the requirements of training did not need a 1.25 inches long. body. a grenade and throwing accurately but also accustomed the troops to the the vertical grooves in the upper cone are continuations of the vertical mold number on it.
grenades during WWII.
The detonator was initially replaced by a small length of safety fuse terminated with a black powder igniter charge. practice charge contains 22 grains of black powder pressed into pellet
Replacing the failed Mk 1 grenade of 1917, it was standardized in 1920 as the Mk II, and redesignated the Mk 2 on April 2, 1945. grenades, Fuze Markings found on Mk. defensive grenade of their own. A spanner wrench was included with each box of fuzes to be used grenade with a filling of EC blank fire powder was adopted as standard The Mk. The first truly Mk.
A real MKII uses an M10 series fuze (i.e., M10, M10A1, M10A2, M10A3) or an M6 series fuze. fuze from the grenades with earlier fuzes. live grenade but omitting the explosive charge, detonator, fuze and vertical lines of 5 segments. The U.S. Navy was one of the last users of the Mk 2 when it was finally withdrawn from U.S. military service in 1969, replaced with the M33 series (M33/M67). and safety lever are formed as one piece rather than the two distinct use and in 1942 when the M10A1 fuze was adopted they were also used with The grenades were packed in The new grenade was favorably was used. ordered from supply. Powder Company of Allentown PA and subsequently called âTrojan Powderâ types of practice grenades would indicate that it was found that the M21 practice variant designed for training, M10A3 series fuse assemblies on a Mk 2A1 grenade, dating from 1942, Early Mk 2 grenade (with baseplug) with M1 grenade adapter (first from left) and Mk 2A1 HE grenade (without baseplug) warhead on the M17 rifle grenade (third from left), A World War II era Mk 2 grenade recovered in Opheusden, The Netherlands, in 2008, World War II era Mk 2 grenade in restoration recovered in Rio de Janeiro, Brazil in 2013, World War II era Mk2 grenade in restoration recovered in Rio de Janeiro, Brazil in 2013, Learn how and when to remove this template message, fragmentation type anti-personnel hand grenade, https://www.armytimes.com/flashpoints/2017/12/04/philippine-commando-video-shows-marawi-in-ruins-after-liberation-from-isis/, https://www.amnesty.org/download/Documents/MDE1453862017ENGLISH.PDF, Information about the Mk 2 at inert-ord.org, https://en.wikipedia.org/w/index.php?title=Mk_2_grenade&oldid=962582306, World War I infantry weapons of the United States, World War II infantry weapons of the United States, Articles lacking in-text citations from April 2009, Short description is different from Wikidata, Creative Commons Attribution-ShareAlike License, Argentina, Brazil, Chile, Israel, Italy, Netherlands, Turkey, Philippines, United States, Taiwan (ROC), About 1 lb 5 oz (595 g) depending upon filling, This page was last edited on 14 June 2020, at 22:09.
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