Hatsan spark

Pretty sure the Hatsan is Chinese. I seem to have found the identical compressor, minus the decals, for $264 delivered with power supply and an air drier. Wish there was a little more info online. I was going to wait for the JSAR unit, but for roughly half the price, tough time keeping my Visa card holstered. 

Advantage to the Hatsan labeled one is USA warranty support. When I had just a Maximus, hand pumping looked doable. Now, with an Mrodair M10 and a Hatsan AT44 10, compressors are looking more attractive.
 
195F max temp, 1 liter max in one fill, and no more than 30 continues minutes run time (although 15 minutes seems like a more realistic target going by temps when running), also let the compressor cool back down to room temperature between fills.

It also says to turn the compressor off before opening the vent screw, but I'm not sure whether it matters.