MagBloks are inserted into the top of an empty magazine to so that the slide lock lever does not lock the slide to the rear when working the slide on semi-automatic handguns during dry fire. This prevents the need to manually release the slide each time it is racked when dry-fire training. The slide will not lock back when you cycle it if the MagBlok is inserted, causing the slide to function as it would if the magazine had ammunition in it. This duplicates the mechanical functionality of your handgun when conducting dry-fire training, preventing unnecessary training scars! Each pack comes with three (3) MagBlok 380 inserts and are for handguns chambered in 380 Auto only. Other calibers are available.
MagBloks are intended to be used with a BarrelBlok properly inserted into your barrel.