Very nice design - lots of positives - Holosun RML Rail Mounted Compact IR Laser Sight

For starters, this laser is built very nicely. The fit and finish is really pleasing and you can tell the materials used are high quality.

I like the system of shims that they give you so you can size which pic slot you want to place the laser. That gives you a secure fit with no wobbling or rattling.

The battery compartment is solid and relatively easy to access with the special tool Holosun loves to include in their packaging.

The one gripe is the battery life. It would be nice if they came out with a rechargeable version.