When inserted in the magazine, BlokSafety's MagBlok magazine safety device visually shows the magazine is safe and disengages the follower from the slide stop lever. This tricks the firearm into thinking the magazine is loaded, allowing the slide to be fully operated without “slide lock” during training exercises. This means the firearm safely and mechanically operates for officers in the same manner it would on the range or in the real world, with no training scars. With three MagBlok inserts, officers can train with their spare magazines for realistic reloading and malfunction drills. MagBlok is only available in the BarrelBlok Pro series of safety products.