The BarrelBlok Instructor Pack comes with one (1) each of the RifleBlok 556, BarrelBlok 380, BarrelBlok 9, BarrelBlok 40, BarrelBlok 45 and BarrelBlok 357. BarrelBlok and RifleBlok universally fit into any semi-automatic pistol/rifle chambered in the same caliber. Each BarrelBlok and RifleBlok comes with one (1) BarrelBlok, three (3) MagBlok magazine inserts and an instruction booklet. Your firearm does NOT have to be disassembled to use BarrelBlok. Simply insert BarrelBlok to train, and remove it to return your firearm to its ready state. BarrelBlok is SAFE, REALISTIC, TRAINING!
PATENTED AND PATENTS PENDING