ArmaLaser TR4 for S&W Shield 40
Ii have the ArmaLaser TR4 for my S&W Shield 40.
It is an excellent fit and looks like part of the pistol, doesn't
look like an add-on. The contact points work well, especially in conjunction with the Hogue Rubber Grip Sleeve (a beast to put on). The single finger grip keeps the middle finger snug up against the activation sensor. The battery is changeable without taking off the laser.