Sabre Inert Training .68 Caliber Projectiles 35 CountSABRE Inert Projectiles are compatible with the SABRE SL P1C Projectile Launcher and other . 68 caliber self defense launchers. Indirect contact projectiles will burst on impact. Disperses 6 foot (2 m) wide inert cloud upon impact, these practice projectiles provide realistic training, helping to prepare you for real life encounters. Practicing firing your self defense launcher will increase you muscle memory, accuracy and confidence should you