Original Imperial German WWI Model 1916 Inert Training Stick Grenade - Übung Stielhandgranate
Original Item: Only One Available. This is an extremely rare excellent example of a practice training M1916, M16, or Stielhandgranate 16 ("stalk/stick hand grenade") German Stick Grenade, often called a "potato masher". They are officially termed Übung Stielhandgranate, which literally means Exercise Stick Hand Grenade. This grenade is completely inert as specified by the BATF, and cannot be converted to an explosive device. It stands 14 inches tall with a 4 1/2 inch long inert explosive head. These are exceptionally rare far more difficult to find than the usual WWI versions.
This very nice example was recently acquired from a large ordnance collection in the U.S.. The bottom cap unscrews to reveal the original cavity, though original porcelain bead and pull string are unfortunately missing. It still retains a large amount of the original red paint on the inert vented warhead, even on the belt loop and top. These dummy grenades had a small charge inside that would indicate "detonation" after being thrown, and were vented so this could be heard (and so they could be reused). The head is also made from thick steel, to simulate the weight of a real grenade.
One side of the stick is very faintly marked 5 1/2 Sekunde, indicating that the fuse is a 5 1/2 Second delay. The other side of the handle is marked Üb. Sthdgr. Bz, an abbreviation for Übungs Stielhandgranate.
This is a fantastic opportunity to pick up a rare example of a German WWI Training Stielhandgranate. Ready to display!
Germany entered World War I with a single grenade design: a heavy 750-gram (26 oz) ball-shaped fragmentation grenade (Kugelhandgranate) for use only by pioneers in attacking fortifications. It was too heavy for regular use on the battlefield by untrained troops and not suitable for mass production. This left Germany without a standard-issue grenade and improvised designs similar to those of the British were used until a proper grenade could be supplied.
The 'stick grenade' first appeared in the midst of World War I; it was introduced in 1915 for use by the German Empire's armed forces. As time went on, the design further developed, adding and removing certain features. Aside from its unique and unusual appearance, the Stielhandgranate used a friction igniter system, a method very uncommon in other nations but widely used in German grenades.
During World War I, the original design of the Stielhandgranate, under the name M1915 (Model 1915), was in direct technological competition with the British standard-issue Mills bomb series. The first design model of the Mills bomb – the Grenade No. 5 Mk. 1 – was introduced the same year as the German Model 1915, but due to delays in manufacturing it was not widely distributed into general service until 1916. (There was a small period of time where German troops had large supplies of new Model 1915 grenades, while their British opponents only had a very small number.)
As World War I progressed, the Model 1915 Stielhandgranate was further improved with various changes. These received new designations corresponding for the year of introduction, such as the Model 1916 and the Model 1917.
Model 1915 (M15)
In 1915, industries of the German Empire designed and began production of the original Stielhandgranate, appropriately named Model 1915 (M15). It utilized a priming system, unlike the percussion cap pin used in most grenades of the period. The easily recognizable "potato masher" shape is a result of a number of different styles and choices of the design. The grenade mounted a charge head within a sheet-steel cylinder atop a long hollow-wooden handle. Internally, the explosive – initially ammonal but later approximately 170 g (6.0 oz) of trinitrotoluene filling – was connected to a detonator, and a pull cord ran from the detonator down the length of the hollow handle, emerging from the base. To use, a soldier would simply pull the string downwards, dragging a rough steel rod through the igniter within the fuse. The rod's abrasive contact would cause sparks and a flame to light from within, setting the fuse burning. This fuse took approximately four and a half seconds to reach the detonator before exploding.
The Stielhandgranate's handle design provided a lever motion in a throw, significantly improving the effective range of use. It could be thrown by the common German infantryman approximately 27 to 37 metres (30 to 40 yd), whereas the British Mills bomb could often only be thrown about 14 metres (15 yd). The British War Office report "WO 291/472 Performance and handling of HE grenades" gives an average figure for a standing throw of a Mills bomb as 27 m (30 yd), (23 m (25 yd) when crouched and 22 m (24 yd) lying prone). One issue that hand grenades of the time had was unpredictable rolling after landing. The German Stielhandgranate did not suffer nearly as much, and in some respects not at all, from this problem as the handle together with the charge head resisted rolling. Instead of rolling straight down a hill or across rough terrain, the Stielhandgranate could create an axis for rotation: it would instead roll from side to side, because the charge head and length of the grenade acted as a balance. However, the additional length of the handle and the irregular overall shape meant that fewer grenades could be carried. It also took longer to prime the grenade than an allied counterpart, such as the Mills Bomb.
The Stielhandgranate primarily relied on a concussion blast effect, the container creating little fragmentation compared with many grenades of the time, such as the Mills Bomb and the French F1 Grenade, the later World War II American Mk 2 grenade, and the Soviet F1 Grenade. Fragmentation produced shrapnel which could wound enemy infantry over a large area, a factor which made these types of grenade very good for open areas, such as fields, the blasted expanse of no man's land, beaches, spacious trenches, and wide city streets. Concussion grenades, on the other hand, based their wounding ability purely on the shock and blast of the explosives. The Stielhandgranate was extremely effective and reliable in clearing enclosed areas, such as buildings, fortifications, and the fighting compartment of an enemy tank. On the other hand, performance in wide open areas was less than satisfactory. The blast effect could only go so far before dying out, while pieces from an equivalent fragmentation grenade could fly hundreds of metres (it was not unrealistic to expect that metal shrapnel could hit a soldier that the grenade was not intended for, especially in open areas).
Model 1916 M16 Stielhandgranate
The original M15 grenade suffered from an unfortunate design issue. The pull cord which activated the grenade's fuse extruded from the base and could get caught in debris or clutter on the battlefields of World War I, causing the fuse to be ignited, and the grenade to explode on the belt of an unaware infantryman. This resulted in the introduction of the Model 1916 (M16).
Functionally identical to the M15, the M16 included a vital change in the base design. A small porcelain ball was placed at the base of the grenade, attached directly to the pull cord. This prevented the string from being exposed. The small bead was partially enveloped in the wooden handle, meaning that some force was needed to pluck it out. Operation was nearly identical, except that a soldier no longer needed to pull the string itself. This improved version resistant to humidity thanks to its stick cap which screwed onto the bottom which concealed the ignition string. It was later improved by riveting a star-shaped plate which helped the unscrewing of the cap in muddy conditions (an oft encountered condition of the trenches).
From 1916, the ammonium nitrate used as explosive for stick grenades models 1915 and 1916 was gradually replaced by the more powerful Tolite. As a consequence the grenade head volume could be decreased, and the manufacturing process could evlove from the usual crimping to thin steel plate stamping in one piece. This modification gave birth to the :
Model 1917 M17 Stielhandgranate
In the same time the manufacturing specifications became much more precise, so that the numerous producers realized stamped boxes having the same shape and the same dimensions.
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- Totally inert, cannot be converted to an explosive devise, not available for export
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