
The 25mm M910 target-practice, discarding-sabot with tracer (TPDS-T) cartridge is a training round for the M791 APDS-T. The projectile assembly consists of a steel core, aluminum windscreen, aluminum base, nylon sabot, plastic nose cap, and tracer pellets. The steel cartridge case contains a percussion primer, booster pellet, and propellant.
Magnesium tracer
Primer, Percussion, M115
Single or double base propellant (0.214 lb, 0.0953 kg)
TM 43-0001-27, Small Caliber Ammunition (chg 7, 2004)