Preset air tanks?

[Lucky]

ok i know they are not ideal but then i don't have the bank balance to support a fully adjustable set up and kevlar tank.
my question is that i'm running an 04 cocker and thinking of going to air, now these tanks are pre-set but at what pressure? or are they adjustable off the gun?
What are the pitfalls of using these tanks?
any help would be appreciated.

 

[Jon S]

LP presets tend to be around 450psi, HP at 850. Those are the stated outputs but they could be a bit higher or lower depending on the manufacturer.

Generally they can't be adjusted (hence being "preset") but I believe Nitroduck do make a screw-in reg that can be adjusted. I dont think there's much need to be honest, as your inline reg will take care of adjusting the pressure to what your marker takes.