4500Psi Aluminum Air Bottle, 30 Mpa Explosion-Proof Aeronautic PCP Cylinder, M18 * 1.5 Refillable High Pressure Tank for PCP Scuba Game(Empty Tank)

This bottle came on time and is very well made. It is a heavy gauge aluminum and it fit the valve set I bought. I used the "Aopkeo Fill Station Adapter Valve 4500psi for Airsoft PCP Paintball HPA Cylinder Tank Bottle (M18*1.5)" from here on Amazon, and it fit well and sealed. Very happy with this purchase for topping up my Barra 250Z PCP in the field. Great product for the price !!

Great quality and exceptional value in customized airgun applications.

This very good and gives me a couple of recharges for my PCP rifle. Not as light as a carbon fibre bottle but good value for money

So far, holding pressure. Threads and O-ring cut are sized well. Appears to be well-made. The pressure rating stamping is a bit shallow and difficult to read (fairly visible under angled lighting), but I have no objections. I used the "Aopkeo Fill Station Adapter Valve 4500psi for Airsoft PCP Paintball HPA Cylinder Tank Bottle (M18*1.5)" from here on Amazon, and it fit well and sealed. Once I tightened down the Aopkeo's fill valve snugly, the whole works has held pressure rock steady at nearly 4,000 PSI for a couple of weeks. I've only had it up to just over 4,000 PSI (Aopkeo's pressure gauge reads just under 4,000, my pump says nearly 4,200), but that is about all I plan to fill it to. It's a metal tank - they did not appear to screw it up.

Great tank for a paintball HPA tank, or a PCP big bore rifle, a little small for scuba, and a little to big for the home defense kinetic launchers! but it's worth the price that's forsure, not too heavy, and solid build, built to last!