Tactical training round

Tactical training rounds (TTR), commonly referred to as stun rounds, are a type of training ammunition used by the UNSCDF to simulate live fire.
== Description ==
The TTR has a polymer shell that helps maintain the actual characteristics of bullet flight. Inside, there is a proximity fuse that dissolves the shell when the round comes within 10 centimeters of a surface. Once dissolved, a blob of red paint splatters onto the target. The paint also hides a powerful anesthetic, capable of knocking a target unconscious for hours depending on the area hit, and immobilizes the nano-fibers woven into training clothing, causing it to harden. The target then loses the ability to move the body part that is hit, simulating a bullet wound to that area. At the end of an exercise, the trainees can be unfrozen with a specialized baton.
== Variants ==
* M53: 7.62x51mm - M392 DMR, M395 DMR, M55K carbine, Mk. 55 EBR, M250 MMG, M268 minigun.
* M67: 6.8x43mm - M55 SCAR, M37/40 ACR, M55K carbine, M255 LMG.
*M71: 10.2x22mm - M6 pistol.
* M14: 11.43x77mm - M99 SASR.
* M16: 12.7x99mm - M99 SASR, M231 HMG.
* M98: 5.7x23mm - M7 SMG.
* M34: 25x30mm - M325 grenade launcher.
* M37: 25x40mm - M75 CDTE, M460 AGL.