Ah, the Jolt. A fistful of jolly good fun. Pew*reload*pew*reload*pew!
But it lacks a decent sight. there is blue nodge withing the orange nozzle, but it disappears when aiming.
Step 1: Izy
Glue a tiny piece of plastic onto that nodge. Done. Precise for hundrets of centimeters!
Step 2: Next Level
Since you have your glue ready, why not use it to mount a conveniently shaped piece of metal as a clip for a second round?