Gerald, since the S&W 627 8 round performance center 357 magnum doesn't have a rail to attach a laser the only option would be to use a grip laser. There's no other place to attach one at the moment. If you decide you want to go with a grip laser just let us know and we can help you find one. Sorry but hope this helps some.

Hi Gerald and welcome to the Buds Community. Unfortunately not currently Sir. Grip Laser is it until more 3rd party's develope other options. Cheers and stay safe!

Crimson Trace makes a grip laser for k, L & N frames. Here's the link below.
crimsontrace.com/products/laser-sights/lasergrips/lg-207-lasergrips-for-smith-wesson-k-l-and-n-frames/01-1070.html