It's always nice to have a regulator on your gun. You could pass with an x-chamber just because you aren't using an electro-pneumatic gun. Depends if you can spare the extra cash for a reg.

X-core is made by Dead On. Apparently it's one of the better X-chambers.

I'd go for the reg, because I view the X-chamber as a band-aid.

A friend of mine runs his A-5 with CO2.  He has a remote and a good x-chamber.  He has left his E-Grip on full auto, max ROF since he bought it.  He never freezes.  Based on that sample of 1, I would think you would be fine with the x-chamber.

That said, the Stabilizer does provide additional regulation benefits, although they are minimal without the LPK.

"From the tests, the Centerflag, Crossfire and Pure Energy systems were found to have the best flow rates, with the Evil Scion producing very good results also.  Of these the Crossfire is the group leader, which, although matched by the Pure Energy system in terms of recovery time, does not suffer from the same pressure fluctuations.  The remaining systems all have regulators that start to close early in the recovery period, which has the effect of restricting airflow and extending the recovery time – the worst offenders being ACI Bulldog and the Dye Throttle with recovery times of over 10 times that of the Crossfire."

(Please read the entire article in 2004 PAINTBALL Ultimate hardware guide, COOKIN' ON GAS)

MilSimBaller wrote: will i get shoot down using co2 with a palmers stab?

Yes, its possible , shootdown happens when the CO2 cant convert to a gas from a liquid fast enough , and the temperature of the liquid drops , lowering the gas pressure , causing "Shootdown" , even if you have guaranteed 100 percent conversion to a gaseous state with the CO2, Its possible at sustained High rates of fire .

This is just a rough guesstimate , but if you do say,,, repeated bursts of 50+ ropes , with intermittent single shots , you WILL experience shootdown with CO2 , whereas , if you do mostly single shots ,or triplet bursts , and infrequent sustained bursts of "Supression " fire (aforementioned bursts of 50 plus rounds) , you'll most likely be fine with a reg or expansion chamber . My style of play more closely matches the latter , so I play with my 98C just as the air system came , and rarely if ever do I notice any shootdown .

The most accurate answer depends on your intended style of play , Yeah , its possible . I lay out supression fire when its called for , but its really difficult to say "No, system X will never allow you to experience shootdown" , it depends too much on how you use it , almost like getting mileage from an automobile , you keep the pedal to the metal , you arent gonna get the most mileage ,  , but you WILL get there quicker !