5 MW Green Laser not working on DRS-IAR

The 5MW Green laser is not working on the DRS-IAR. I have provided photos of the L85 and the DRS, as you can see the laser is attached to the DRS but not functioning, and no, its not turned off I promise. I am not even able to turn it on. I have had to switch to the 5mw red laser for the time being.