STEP #0 -- Right Feed

Start your build with a right feed WPG cocker body or Sniper II body. Get a few 16 oz CO2 tanks, with on-off valves, and a bottom line setup. If you dont have a pump kit - consider a Chippley or White Wolf. Warning: The 99 and older bodies have a different hole for the guide rod than the 2K+ bodies.

STEP #1 -- Pick Your Reg

It is critical to try and operate at a constant pressure hitting your marker. For CO2 I love my unireg - and have had dissapointing experienced with the Palmer Stabilizer, Air American Black Ice, first gen ANS and Angel Reg.

Im considering the CCI In-Line Reg. $63 from www.chipleymachine.com - also get a guage for the marker side of the reg, and dial the thing in to 400PSI for CO2. When you shoot, the outpup pressure should recover instantly and return to 400psi. If it doesnt, get your money back and get a different reg. I know a lot of guys unhappy with the Palmer Stabilizers. You may need a guage collar to put between your asa and reg to mount your gauge on.

 

STEP #2 -- Springs & Hammers

Cocker nuts will holler about valves - but for a single shot pump, cyclic rate doesnt matter much - so the stock valve should be fine. And that leaves the hammer and springs. Your main back spring pushes the hammer forward when you release the sear. The weight of the hammer should be pretty heavy to provide a uniform blow to the valve. Consequently the main spring must be pretty heavy to push the hammer. A highly polished hammer should help consistancy, which is where the money comes in.

The old school guys know this already, but for the new guys welcome to the world of the Nelson Spring Kit. You may want to pick up a valve tool for removing your valve nut.

You want to back your velocity all the way nut out and keep changing rear springs utill your marker shoots in the 250s. Then move tune it in to 280ish. If when you tune the velicity up you feel a little click on the allen wrench - and you have to turn the pressure up, you may want to UP your rear spring - they do wear out.

DONT CUT YOUR SPRINGS!!! - this will leave a jagged edge on one end which will make the marker's velocity jump around.

The Nelson Spring Kit Color Code: from strongest to weakest -- RED YELLOW BLUE GREEN ( I think)

If you think you have a non nelson hammer, consider looking for an ACI Nelson Hammer Kit $30
or BelSales "Rex" Nelspot Hammer Kit $50

For springs & valve tool: WWW.KAPPPRODUCTS.COM

For hammer kits:
http://www.bulldogpaintball.com/rexnelspot.html
http://www.bulldogpaintball.com/acihammerkit.html

#3 - borrow an All American Freak 16" or 14" and try it again. -- I run an original 16" AA - and im considering the Freak AA, 16" w/ stainless inserts.
http://www.smartparts.com/Products/AllAmerican.aspx

#4 - dont hold the pump handle when shooting for maximum range and accuracy from a Sniper II.

#7 - if still not happy w/ consistancy, then go nitrogen. Im looking at that Nitroduck 45/4500 plasma preset to 400psi output.

#8 -- I drilled out my pump guide rod to provide a little xtra volume behind the valve. And I have mixed feelings about this. It is probaly a safe idea, but I would had a few xtra pump guide rods before doing this again.