So I'm looking at the Armada that I'm trying to win, I'm doing A LOT of work to win it. But what I'm curious about is simple. In the front, under the barrel is the air intake value. First, is there a portable tank I can find that attaches to that for a quick refill? Second, can I attach said possible tank and the air gun to a air compressor to fill both again for more use in the future?