utm rounds
New Munitions: Silent Bullet Rounds, Man-Marker, Rounds, Target Bullet Rounds UTM makes four kinds of training ammunition for common military and police small arms, from pistols to light machine guns. From left-to-right are the Target Bullet Round (TBR), Battlefield Blank Round (BBR), Silent Bullet Round (SBR), and Man-Marker Round (MMR) in 5.56 linked for the M249 SAW, 5.56, and 9mm. The first think Mark showed me was a 5x cutaway model of the standard UTM 5.56 Man-Marker Round (MMR). New 7.62mm UTM Ammo? The 7.62mm is available in both loose and linked rounds and all four types of UTM RBT NLTA, Silent Blank Round (SBR), Battlefield Blank Round (BBR), Man Marker Round (MMR) and Target Bullet Round (TBR).