Pierre Kerbage from United States, TX Public Profile

If you can figure out how to put the battery in that device (not kidding), you will love it.
After 3 of us tried, we all failed to find out how the battery sentinel/compartment opens.
The manual shows an INCORRECT drawing that you have to swing it to the right. Nothing could be further from correct.
Nearly broke it.

1. Flip the Tab 180 degrees ALL THE WAY to the other direction
2. You have to put your thumb UNDER the battery compartment (above the switch) so an EXTREMELY tight switch and PUSH UP as there is a hidden hook on the inside of the compartment.
There is a video that a user did on the TLR 1 but essentially it is the same
https://www.youtube.com/watch?v=N1iknC4j8PM

After hours of frustrations, I got it. They could NOT Have made this any harder and the microscopic manual could NOT have been more wrong. ALL YOU NEED IS A BIG CARD with a VIDEO instructions. Everyone has access these days.

OK - now that my rant is done, this is one of the best that I have ever used (and I have used the top 3 brands).
On a SIG P229 , you DO need to put the 1913 Picatinny Key. So while the GL (Glock) will work, it was not near as tight and the laser was moving too much. So be sure to put the right Key that fits the tightest. A turn of the large screw using a coin totally secures it.

Awesome bright light, the strobe is a bit difficult to activate, so you have to "double click" the switch. But absolutely fabulous. THe Green laser is GORGEOUS. PERFECT. BRIGHT. I think I saw mine