There’s a great science fiction series by Steve Perry called “The Matador Series” where the weapon of choice is a dartgun that mounts to the back of your hand. The barrel comes out above your index finger and you shoot it by pointing your finger and tapping the underside of the barrel.
There are a bunch of different kinds of darts, stingers that just hurt, shocktox which incapacitates and Smasm… which makes every muscle in the body involuntarily contract and ties the victim in a knot for 6 months.