T4E® .50 caliber rubber training ammo allows you to get in some valuable practice with your .50 caliber T4E® TR50 or .50 caliber T4E® Practice 2 Protect handguns. This pack comes with 250 rounds for lots of training, but the real good news is that rubber ammo can be reused. Just pick up from the range, inspect for chips or breakage (discard those) and wash the good ones off. Buying in bulk will help make the most of your training dollars, too. These .50 caliber rubber rounds weigh in at about 17.4 grains.