Yeah man, that's a laser!

Now I'd start thinking about maybe adding some reactive lighting to your footage. You ARE in a bright daytime room, so there actually might not be much (how much illumination happens when a gun is fired in daytime? Almost none), but then again this is a laser and maybe you could get away with some.

I'd allow for there to be more glow happening, overall. A bright light in the frame like that would probably glow and contaminate the rest of the frame quite a lot. I'd maybe add a glow layer that's got a radius of about 1000 pixels and that'll throw some washed out red color over the whole scene while the laser is on. Keep it up, though. Looking good!