bought this to replace a ssi cartridge .17hmr unit that did not work.
came promptly but was way out of adjustment and the batteries only lasted a minute or two. it was loose in the barrel and when i emailed ssi's "48 hr reply" desk they never returned my email. will see how it works in my new 300 win mag and report back. hopefully it was just a bunch of bad chinese batteries
Pros: good light; adjustable; ease of use
Cons: see comments
This review was written in the old system and had content requirements that are different than reviews written today.