This system incorporates a pair of powerful magnets, which are positioned to reject each other, creating what feels like a spring-loaded system and two very distinct positions for the slide lock. All the way down and ALL the way up.
Now, as the gun is released on the draw, the magnets continue to push the slide lock upwards, higher than the gun itself pulled it, thereby ensuring that when you come to re-holster, there is no chance of catching that upper tooth as you holster.
An additional benefit of this magnetic system is a distinctive ?click? which is heard as you holster.