Honestly you haven't seen Nerf until you've seen something like this: https://imgur.com/a/4Ydge0f
A modified ECS Cam-12 that's painted, hooks up to a paintball tank, and shoots hyper accurate half length darts that spin through the air at a whopping 300 feet per second.
Modding blasters isn't very hard and believe it or not, there's a massive community and industry behind this.
To get started head over to r/Nerf, and be sure to check out OutofDarts' modding book that you can find on Amazon: https://www.amazon.com/Nerf-Blaster-Modification-Guide-Unofficial-ebook/dp/B07KGG7P89/ref=mp_s_a_1_1?ie=UTF8&qid=1542765320&sr=8-1&pi=AC_SX236_SY340_QL65&keywords=luke+goodman