Yea, it's a big ugly sucker, not suitable for CCW at all and its suitability for OWB is TBD.
With batteries it's 5.4 ounces and just squeaks in under the VP9 rail's "load limit" of 5.6 ounces.
But it also has a 400 lumen LED light and green laser as well as a IR illuminator and IR laser.
The white light is very nice, with a very bright center and a distinct flood light halo around that.
On our rural, very dark range I was easily lighting up targets at 50 yards with the spot and could see the entire width of the bay (approx 100' wide) with the flood portion of the beam.
The green laser was easy to see at 50Y against pretty much every background and at 50Y appears to be about <1" in size and very defined.
Using Gen 2+ NVG the IR illuminator brightly lit up about a 50' diameter area at 50Y, bright enough to distinguish details on the targets and slightly illuminated the full width of the bay.
The IR laser dot was very bright on the target and about 1" in size. It had a hot center and a slightly fuzzy ring around it, but that could be the NVG's as well.
I was seeing and hitting 8" plates no problem with both the white light/green laser and the IR Illumination/IR laser.
The lasers are co-aligned. I zeroed the green at 25Y and the IR was perfectly zeroed as well with no adjustments. At 50Y the difference in zero was negligible and within the dot as far as I could tell. I put the dot at the top of the 8" plates and was knocking them down with solid center hits.
Today at the range the green laser was visible to 35Y against a buff colored target. It was cloudy but fairly bright. I'm guessing on a white hot sunny desert day the laser will be visible out to 20Y or so (which is what my Viridian lasers are good out to).
This laser is supposed to be temperature stable from -40C to +65C and I couldn't tell any difference in it from my 23C house to the -4C it was at the range this morning. My Viridian on the other hand starts getting dim when the temps get around freezing.
I'm only at 250 rounds with the combination but the laser has held zero, the rail clamp has stayed tight and the pistol hasn't balked. So far, so good.
I'm headed to a different range around the 12th of December (New moon) to see how it does out to 100Y with Gen 3 NVG.