Remove AR, put rubber bands on it so that they pull the pull-back-lever thingy forward so it makes it harder to pull back, and the darts will go much harder and faster.
also you can replace the spring with something more powerful
The Nerf nitefinder can shoot up to 36ft (10.80m) without modifications. Trust me, I have done it before.
same way you would mod any other Nerf gun
*sigh* http://answers.yahoo.com/question/index?qid=20100211204407AAkErpF
If you mean to mod it, check out this guidehttp://modworks.blogspot.com/2009/09/nerf-raider-mod-guide.html
If in stock, Target they sell packs of 16 for $4
There is no pump-action mod for a Nerf Raider CS-35; it already has a built-in pump-action mod due to the way it is fired.
6 Nerf bullets unless mod
The Nerf Secret Strike. It's worth $3-4 US dollars. If you want a bigger pistol, go with a Nerf Nitefinder or Maverick. The cheapest Nerf rifle/gun is around $20 dollars, like the Recon CS 6, Firefly, Deploy, Magstrike, Hyperfire, and the Alpha Trooper.
air restrictors
no really easy
Take out air ristrictor
No, unless you mod it.