Crimson Trace Glock 17,22 Lasergrip, Rear activation, Dual Can IR/Red, Black LGD is a part of the high quality and dependable Laser Sights from Crimson Trace. All of the features you need for a price you want. Laser Sights from Crimson Trace are well known for their quality and Crimson Trace Glock 17,22 Lasergrip, Rear activation, Dual Can IR/Red, Black LGD upholds that standard.