This actually the second one of these I received, first one got returned. It was bought from a partner vendor, through Amazon. Various defects on the first one, Amazon had another to me in 3 days. Current one is good for functioning. Attempts to put a dot sight on it were foiled by the two-step rail, have had that on other Hatsans. Integral pic mount on the dot sight just didn't have enough vertical space to take the narrow top rail. Amazon has snap-in Picatinny to 11mm rail adapters, on order for tomorrow, the previous solution. I get about 1 magazine per tank fill. Accuracy depends on pellet weight and tank fill state, shots start stringing towards the end. FX Pocket Radar says 40 fps difference between #1 and #12 with some pellets. This one reliably repeats, can snap off shots one after another with few jams. No additional air tanks or magazines seen yet on the retail market. Internet search reveals a Velox tank filler for off the gun filling, have one and it works. Tiny tanks only take a couple of seconds to fill. But a lot of tank swapping for extended sessions.This disappeared right as I was writing it, just got it back a week or so later. I now have a Holosun gold dot on it, had to get an 11mm rail to pic adapter to use it. Can reliably get them all in the bull off-hand on a 10M pistol target, just have to recharge after every 10 shots. Trigger isn't the best but far from the worst. So far, RWS Hobbys in .22 seem to be the best, more velocity with the lighter pellets seems to mean tighter groups.If you get one, wring it out throughly, return ones that aren't up to snuff. Amazon was good that way, about 3 days between putting in the request and having a new one in hand.Still haven't found a reliable source for spare magazines and tanks. Cataloged but out of stock.