Have you tried it yet? I expect to receive mine next week. I've been using a Beamshot mounted on Weaver Detachable Top (3/4-inch) rings for a year now and I always wished to see a Walther-made integral laser module, like the P99's. It appears, in your pickies, that the beam is quite bright.
I am picking one up from RSR Wholesale next week. I will let you know how it is, and then if we want to do a group buy, I'll see about putting it together. They are on "allocation" right now, so I don't know how many I can get