Other option would be a stinger grenade as seen
here. Didn't find a video with better view of the actual explosion, but it shows the inside and the effects rather nicely.
For shadowrun game terms you would lose the elemental damage (or the armor-bypassign capacities of the flash-bang), but it would already exist and not have to be built. Also, those are pretty likely to be used by riot control units, so they shouldn't be too hard to find.