want to find your gun on the dresser in complete darkness this is for you. EMP proof with no battery's to run out however you must have the tool to install. or a quick trip to the gunsmith he installed mine for 20$ in ten minutes.
Pros: EMP proof, no batterys required
Cons: must have the tool to install, or use gunsmith
This review was written in the old system and had content requirements that are different than reviews written today.