Crimson Trace's M&P LG-620 Series Lasergrips for S&W pistols are interchangeable between different calibers of the M&P pistol and feature a hard polymer surface that's most closely matches the medium stock Smith & Wesson grip inserts. These lasergrips fit the M&P pistol just like the stock grips while offering a compact laser diode housing that's well suited to most carry and duty holsters. Crimson Trace LG-620 laser grips also feature a rear-activation switch that's part of your natural grip so there's no fumbling to activate the laser with your trigger finger.