It looks great. Do you have any personal experience with this setup. It looks to be the front runner. Ive actually tried the M6, but it doesn't fit. It is too big for the rail. I've seen where is is advertised to fit, but doesn't work on the SW99. Thanks for the heads up.
Sorry I don't own a laser... but the Blast2 would be the front runner if I needed a combo and the BA6 for just the laser.....
if you don't mind having some sort of mix there is still a flashlight holder that will attach to the bottom of the magwell that can make for another combo
for the SW99 and later walther P99 with the more common style accessory rail, try the TLR2 by streamlight. as it comes standard, you'll need to change out the cross-bolt key to a sw99 unit. i think the current stock TLR2s are delievered with the key included...but if not, a phone call to streamlight gets one in the mail to you immediately. the TLR2 uses the same batteries as surefire flashlights, uses an unbreakable LED for 80 lumens of light, and the laser is mounted very compactly as a unit. operation is pretty much like any other tactical light, toggle switch for momentary on or constant on, and another toggle for laser only, light only, or both.