Wheeler Digital Trigger GaugeWheelers Professional Digital Trigger Gauge features an over molded design and soft touch buttons for comfort and a consistent line of pull. Includes bladed trigger adapter to allow use with triggers that have internal safety blades such as: Glock, Ruger, Savage. Also includes a foam lined storage case. 0 12LBS RANGE LOAD SENSOR DIRECTLY CONTACTS THE TRIGGER ARM FOLDS INSIDE HOUSING TO PROTECT THE LOAD SENSOR WHEN NOT IN USE FEATURE MAX, MIN, AVERAGE