Couldn't be much better. Takes up very little space on the pistol. I hope it maintains its zero over time. The way the Laserguard "fits" together on the pistol seems to lend itself to some variability in the laser aim after repeated (many, many) shots. If you need to remove the Laserguard for detailed cleaning, you'll probably have to re-zero the laser. Standard Lasergrips have retained zero for me after removal and reinstallation. But, then again, Lasergrips install differently than the Laserguard. Hopefully it still performs well after a year. Cost / benefit ratio is worth it for me, though.
Pros: Doesn't take up much space, seems to be retaining the zero
Cons: None as of yet
This review was written in the old system and had content requirements that are different than reviews written today.