Charging an air rifle has just gotten more convenient. HatsanUSA’s new Volt dual-power portable compressor is designed to run on either a 12V power source or plugged directly into a wall outlet, and its smart digital gauge unit controls the power and auto-shutoff pressure, which can be set in 10-BAR increments. The screen displays system voltage, system pressure and the set shutoff pressure and internal sensors keep the system from overheating. At just 14.5 pounds, The Volt can fill air guns up to 10 percent faster than other compact units and a mounted carry handle makes it easy to grab and go. Its tough steel frame is built to withstand years of use. MSRP:  $699.99. Contact: www.hatsanairgunsusa.com