Quoted:
one thing on the lasermax––it dosent work worth shit if the temp is below 30 degrees f.seems the batteries just cant put out enough juice.where as my red works fine.so if temps below 30 are expected go with a beamshot.
All green lasers have that problem, im not sure if its the lithium batteries, but if it is, you could also mod it to use 2 AAA's or 2 AAAA batteries
I made my own green laser, I got an alluminum housing from a $50 green laser sight on ebay(it was originall on my airsoft gun), then purchased a 50mw "industrial" module for $30, then i used the adjustment device that came with the old laser, wrapped the rest of the laser mudle in rubber, and got it perfectly on the Y axis of my scope. After 300 rounds now, its stayed on the exact spot on the scope, and i even removed it from the rail twice.
Best thing is it was broad daylight around 1PM, and i could easily see the the dot at 100 yards with my naked eye. Plus i can melt and cut electrical tape too!!! (within 2 inches)