Quote Originally Posted by Solvo View Post
The big concern would be that they do not provide clean filtered air.
PCPs specify Breathing air only and i strongly suspect that filling with air from one of these will void the warranty on the rifle (which is usually a lot more expensive than the cheap compressor).

The last test i saw for one of these found the air output contaminated by micro particles and a fine oil mist. I wanted to get one but ended up going with the 12L 300bar cylinder as a safer option.

I've spent thousands on PcP rifles and would hate to see any of them put out of action due to faults from poor filling. Same argument on mobile phones, If you spend £600 on a phone why would you trust a £3.50 case to keep it safe?

The 'good' compressors are £2K+ for a good reason.
Absolutely ^^^^

I wouldn't even consider pumping my s510 up with something that may be highly likely to contain moisture. Divers breathing air is the only way to go in my opinion. The thought of moisture in the s510 tube slowly but surely ruining it makes me cringe!!!