Laser sight for a Glock 19, it has a short rail in front of trigger. Cost limit $150.
Night vision scope for an AR15 5.56 for out to 300 yards or so. Price limit $1000.
Best sight for Baretta 1301 shot gun. 12 Ga
Are reflex sights good for pistols and shotguns?
No laser. Get a Streamlight Tlr-1 instead at that price range, or spring for a Surefire X-300 for $199
No night vision is worth getting at that price range over a nice, light-gathering illuminated scope. Spend that money on a Vortex Viper 3-15x or similar for a SPR setup, search discount codes for europtics.com for 15% off...
Holoson 507C, I like the circle around the dot. But do you really need a one on a shotty? I'd rather mount it to a 45deg offset on the SPR setup, or put it on a pistol. Don't put it on the pistol unless you have the ammo to retrain yourself with, though...