Air fill manufacturer
Hatsan
Hatsan's TactAir line spans the whole air-supply problem: hand pumps, the ultra-compact Spark direct-fill unit, the Surge, and the self-contained TactAir Lightning that fills a 6.8L carbon fiber bottle from empty in under an hour. The Spark made a name as one of the smallest 12V direct-fill compressors sold, an air-cooled cube that lives in a range bag. As with Hatsan's guns, the pitch is aggressive capability per dollar with a real US support organization behind it.