I have the LaserGuard on both my MP FS and MP9C. I much prefer the Guard to the Grip (tried it both at the store).
Laserguard:
- takes up some space under your middle finger during grip but fairly easy to get use to it.
- very easy to control on/off when gripping using middle finger.
- directly located under barrel, only have to compensate vertically beyond zeroed in distance.
- Allows the use of other MP grip sizes for the perfect economics. This is very important for me as I have small hands and require the "small" insert for proper grip and trigger alignment and control.
- Holsters selection is almost non-existence but not an issue for me as I love the Mexican carry style and use an Uncle Mikes size 12 for my MP9C and size 15 for MP FS...barely adds bulk and comes as close to without a holster as it can get.
- Laserguard comes in green (brighter) than lasergrip (red).
- Laserguard has 2 point mounting with attachment at the rail and trigger guard. Very secure.
I think the laser grip is great but prefer the guard over the grip.