Crimson Trace LG-852 Glock Gen4 26/27/33 Red Lasergrips - Black - Specifically designed for the unique contours of 4th Gen GLOCK Subompact pistols, the rear activation LG-852 offers a repeatable sighting advantage for your pistol. These Lasergrips provide the versatility of instant activation from a rear switch. Activation Location: Rear Activation Activation Type: Instinctive Activation Attachment: Grip Attachment Beam Intensity: 5MW Peak, 633NM, Class 3R Red Laser Dot Size: Approx. 0.50in At 50ft Glock Subcompact Gen 4: Fits Glock 26, 27, 33. Fourth Generation Only