I bought the Light-Bearing Big Rig with the the thumb break retention for my Gen 3 G19 with a Holosun red dot and a TLR-7a weapon light about 7 months ago. I have an extended mag release, which proved to be no issue at all. The holster has survived going to the outdoor range twice a month, whether in over 100 degree heat or light rain, with the occasional Kasarda drill, and almost daily dry fire. The thumb retention works really well and has a satisfying snap sound when opening. The Ranger Green color of the Kydex matches the RG of the Ferro Bison Belt and PC pretty well. I’ve had good experiences with Guerrilla, and will continue to come here for Kydex and medical.
