Laserlyte rear sight laser

[stavee]

IS ANYONE USING THIS LASER?  PROS, CONS, EXPERIENCES APRECIATED

[garand4life]

I've seen Rob Pincus use one on his Glock 23 during either The Best Defense or SWAT Mag TV. Haven't heard anything negative on them yet.

[Distinguished Master]

Not too fond of them.  Long story, but to sum it up real short, in test I conducted on others it seems the shooter looses focus of the target subject [under strees] and only see's the red laser dot.  Sort of a tunnel vision.  I'm only talking about in use as a defense purpose--not target shooting.

[GUNS-R-US]

I'm wondering about the batteries. i.e. how long they last and how expensive they are to replace?