I had a terrible experience with a brand new Armalaser trigger guard laser today which has really made me decide against getting one for my BG 2.0. Well, quite frankly, since purchasing new XS sights for the BG, I was pretty much leaning in that direction anyway.
Today I tried this newly installed laser out on my Keltec P32 (which is a fun little gun, btw), and the laser moved 6-12" in POI after practically every shot. Obviously something wrong with it, but just made me totally frustrated with it, considering it cost me $150, and was something I was really hoping to be able to rely on. I finally just turned it off and tried using the next-to-nothing iron sights on this little gun, and although I couldn't really see the sights, I actually did ok with the gun.
Anyway, this thread is about the Armalaser and BG 2.0, so I wish anyone good luck who is still hoping to get one of these for their guns. Hopefully that will happen soon, and you'll have much better luck with yours than I did with mine.
Frank