This is my modded Nerf Jolt. I'm really impressed with this gun. When I was on NerfRevolution the other day, I saw this write-up on the Jolt where he replaced the barrel with cpvc. I had to do it. It was easy, and took almost no time at all, and produced amazing results.
In addition to rebarreling it, I've also added a bunch o' springs in it and wrapped 1 wrap of E- tape underneath the O-ring. My Jolt has almost a 100% seal and I haven't even glued the barrel in permanently yet.
Size comparison with a stock Nitefinder.
This thing is tiny and POWERFUL. I suggest that you should go out and buy this thing. My Jolt hits a good 50'. Reminds me of the Cricket from MIB...