BarrelBlok 9 features the new Gen2 design which makes inserting and removing it from your handgun easier! It universally fits into any make/model semi-automatic pistol chambered in 9mm (9×19, 9mm Para). Each BarrelBlok 9 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 handgun to its ready state. BarrelBlok is SAFE, REALISTIC, TRAINING!  PATENTED AND PATENTS PENDING
 
BarrelBlok is a reuseable product
 
Instructinal video: https://www.youtube.com/watch?v=o6p0bqlk1oA