[mroverkill]

No, an HPA rig will not create increased wear on the internals. It will simply provide a more inert gas to propel the rifle. CO2 is vulnerable to temperature fluctuations and cooldown, even when regulated. HPA is not.

 

[mroverkill]

Seriously, just throw the tank in a hydration carrier or something. I promise you you will not notice it. And yes, I speak from experience, I recently ran my Kokusai Crimebuster with no routing for the hose short of the hydration tube port on my hydro pack. You really won't notice it.

 

[mroverkill]

There's still inside the magazine... The magazine basically creates a massive surface area for heat transfer...

Here's how I look at the HPA tank vs. CO2 thing:

HPA tank:

Fills: Free (Generally around $5)
Shots: >1000
Weight on gun: 0
Weight on back: Unnoticeable
Attachment to gun: I have a sling...

CO2:
Fills: $.55
shots: I do not know, but I'm going to go with less than 100, as that 13ci is listed as 150-300 shots, unregulated co2 is at around 850 PSI, and the cartridges are significantly smaller. (I know I am using the paintball measurements from tanks, but I will assume that the change is proportional)
Weight on gun: You've got the whole f---ing system on the gun, it will be heavier.
Weight on back: 0
Attachment to gun: Everything is on the gun...

HPA is more affordable in the long run, and if you drop your gun, maybe you have to replace a QD fitting, not an entire system...

 

[mroverkill]

If you wear a sling....

Seriously it's not a huge deal... Especially if you use coiled air hose... It doesn't get in the way at all... Go HPA, you will thank us for not having to switch the damned little capsules, especially when it involves fiddling with stuff on your gun...