Copyright International Ammunition Association, 2006. All rights reserved.
Cartridge of the Month November 2006
Ultimate Training Munitions (UTM)
Specimen and photos courtesy of Paul Smith
The following information is based on a series of posts on the IAA website forum rcently.
This training ammunition is manufactured by UTM Ltd. of Great Britain.
The ammunition illustrated below is a 5.56mm Man Marker Round (UTM MMR).
The following is from promotional material:
“The man marker round fires a composite 7.5 grain bullet containing a marking wax covered
by a cruciform plastic dome which enables glancing blows on soft surfaces to be properly recorded. There are 5 standard colours available with this nature. The projectile is not required to break upon target impact."
These cartridges fire a projectile at 108m/sec. with an energy of 2.0-3.5J depending on the barrel length. Maximum accuracy range is 20 meters with maximum range approximately 250 meters. They shoot to point of aim at 10 meters.
They are made in 5.56mm and 9mm Para, in four types: Man Marker Round (MMR), Battlefield Blank (UTM BBR), Low Energy Reduced Range Round (UTM LERR), and Silent Blank (UTM SBR). Bullets on those rounds with them are made of aluminum while cases are made of Zinc. The 5.56mm rounds require a UTM semi-automatic Rifle Conversion bolt, which are available for
the M16/M4 series and the German HK G36 Series. There is also a conversion kit for the FN Minimi LMG (M249) in which case the cartridges come linked. The 9mm rounds require a conversion barrel, which are offered for the Beretta 92F, the Browning HP, the SIG-Sauer P220, P226, P228/229, various Gloack Models, and various HK models. Also for the Smith and Wesson Model 5946. There is a conversion barrel for the HK MP5 as well. The pistol barrels are short-chambered so that a live round cannot be fully chambered, leaving the slide partially open and unable to fire. In rifles, the firing pin cannot strike the primer of a live ball round due to a 3mm offset on the UTM bolt head. The rifle cartridges use two primers, the rear primer being a rimfire, thus the mentioned offset. The pistol rounds have two center fire primers, a rear one and a front one. When fired, the entire internal rear of the cartridge is thrust backwards operating the action - basically a primer-activated operating system.
References: From a IAA Forum posting by John Moss, October 20, 2006.
Copyright 2006 by the International Ammunition Association, Inc. All rights reserved.
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Revised 30 October 2006