In a premium holster, Galco makes the "Halo" holster for a P220 with light or laser. This is the current list of lights and lasers that will work with this holster.
Fits with the following weaponlights:
- Surefire X200 and X300
- Streamlight TLR-1 and TLR-3
- Insights M3
- Viridian C5L and Gen 2 X5L
- Crimson Trace Lightguard.
The following rail-mounted lasers:
- LaserMax Genesis
- Uni-Max Micro.
I suggest you call Galco and see if your laser will fit. Or you can get one of those cheap generic nylon holsters that will fit just about anything.