I purchased one of these ND-5 MINI Laser Designators to setup for night hog hunting and LOVE IT! The body is 22mm in diameter, but after a few tight and neat wraps with electrical tape I was able to clamp the light in a 1" scope ring and mount to a 45 deg QD mount for my gun. It is an EXCELLENT light for the money and I expect wild success from here on out with the ND-5 Mini. Just wanted to update that for less than $200 total (ND-5 mini, 45 deg QD mount, and scope rings included), you too can have a very nice long range night setup.
Pros: Compact, All-in-one unit, was adjustable
Cons: Not "adaptable" out of the box, field of view is too small for a "trail light"
This review was written in the old system and had content requirements that are different than reviews written today.