Hello, I did some research and saw no lasers for the R9. One member and I collaborated for a bit as he had fit a Crimson Trace from an RM380. The CT switch at the other end complicates things as the whole thing has to fit and they definitely changed the geometry with the RM380.
Viridian has also introduced a laser for the RM380. It has a magnetic switch that turns the laser on when removed from the Veridian holster. Magnet switch kits are available to fit to your own holster.
Well the Viridian was not a good fit either. I believe it is a harder plastic that the Crimson Trace and did not want to bend with the amount of heat I was willing to put to it.
In trying to bend it to fit with heat I broke the arm. Fortunately there is no wiring or switch in the Viridian arm; it keeps the laser from moving (rotating) on the trigger guard.
Well the arm is not all that didn't fit. With little to lose once I broke it, I began grinding away with a dremel at the portion of the Viridian that is between the battery and the pistol. It was a lot of time consuming intricate grinding and filing that I wouldn't wish on anyone. The laser vertical adjustment is adjusted all the way up and it points right where it's supposed to.
I got it to fit ANAP (as nicely as possible) and tried it under fire. It rotated on the trigger guard a bit with the recoil. I was surprised because it was a tight fit. So I used some 100% silicone in the groove of the laser that the trigger guard fits into and it stays fast. I believe the silicone acts as a filler for the spaces that allowed it to rotate, and as an adhesive.
The Viridian RM380 waistband holster that came with the laser had the magnet I needed for the switch. I removed it and glued it into my pocket holster. The laser activates automatically upon removal. The arrow indicates the magnet.
Again, I wouldn't wish it upon anyone, but it can be done...Tom

