Viridian c5 on walther ppq and p22 - Viridian Universal Sub-Compact ECR Green Laser Sight

I purchased my first Viridian C5 for my Walther PPQ. The unit fit perfectly and looked like it was specifically designed for the PPQ. I wondered if it would fit flush (with the barrel) on my wife's P22, So I tried it with the same mount I used for the PPQ and it fit perfectly. I cancelled my order for the Walther P22 red laser and order another C5 for the P22.
Pros: Small size, green laser highly visible even outdoors

This review was written in the old system and had content requirements that are different than reviews written today.