I bought the tlr-3 light for my Walter p22. Then with the Streamlight TLR-3, USP Conversion Kit Full I was able to securely mount it on my HK USP. It mounts and demounts on the USP easily and quickly. This light will mount on any of my guns with rails. This light mounts solid and is very bright.
Pros: Fits great
This review was written in the old system and had content requirements that are different than reviews written today.