Finally the laser i've been waiting for that doesn't replace my grips! - Lasermax CenterFire Green Laser Sight for S&W J-Frame-G Handguns (Fits Smith 642-1,442-1,637-1,638-2,438)

My favorite way to carry my j-frame is with the barami hip grip combined with a Tyler-T. It's easier than any holster I tried. I always wanted to add a laser my Smith and Wesson 638 (hump-back), but they all replaced the grips, until this one. And the fact that it comes in the brighter green laser sealed the deal. In spite of the harsh reviews, it was the only laser that allowed me to carry in the how I want want to carry this revolver.

The laser came and I took my time and carefully followed the instruction. It took twice for me to get everything lined up. The laser fits the model 638 very well. The activation switches are in just the right spot and work well. The laser is brighter that a CT red, but not as bright as a Viridian green laser. I've had this laser installed for 6 months with zero issues.

I see in the description where they have discontinued these lasers. I'm sure glad I got one and didn't wait. I can't speak for all j-frame, but for the model 638, it works great!