The DryFireMag is the only trigger reset mechanism that fits in the magazine well of pistols, allows practice without racking the slide to build proper muscle memory, and replicates the feel of real trigger release. The DryFireMag gives you an audible and tactile response with each press of the trigger yet does not use the firing pin and requires no alterations to your handgun allowing you to go from the range to dry fire practice with ease. Available as the Standard Trigger Weight and the Spring Pack. The Standard Trigger Weight comes pre-set for the Glock factory trigger weight of 5.5-6lbs. The Spring Pack model comes with 5 additional springs you can change out to achie Mfg: Dryfiremag