Sieve

I need some help picking out some mods to perform on my Longshot, since I have some constraints. Pretty much, I want to increase the range on my Longshot, but at the same time I have to use stock Nerf bullets. I will primarily use this in HVZ, but our group does not allow modified bullets, and I would like to be able to use this gun. Right now, I have the AR's removed and another spring inside of the stock one, and in a few days I will have an AR-15 spring to work with. I've looked around a bit, and some big mods I found are the Angel Breech, Bolt sled reinforcement, and the Mod collection by thedom21. On top of that, I don't know if I should replace the barrels or leave as is, since I will be firing stock darts instead of Stefans. Also, I saw where people pretty much added a spring behind the piston, called it Power Stock. That would be interesting to try, except to a lesser degree since I still want to be able to collapse the gun.

On another note, I need to get a new chamber(not allowed to post in trading yet) since mine is screwed up bad. It may be hard to see in the picture, but not only have the screw-posts been nearly destroyed, but somehow a bullet got into there and dissolved, so it is a gigantic mess and the piston can barely move.


Lastly, I need to make some molds and cast parts for a different gun. However, I am unsure of what type of mold to use, and what to cast it with so any suggestions would be appreciated. Here is a picture of what I want to cast if that helps: