LaserMax Hi-Brite Model LMS-1161 Laser, Fits Glock 26,27,33 LMS-1161 Designed specifically for use in Glock 26" 27" and 33 pistols" the LMS-1161 replaces Glock's factory spring guide assembly with a high intensity red laser sighting system for advanced target acquisition. Easily user installed without the need for gunsmithing or special tools" the Guide Rod Laser is constructed with rugged" precision components including aircraft-grade aluminum and genuine Wolff springs.