HK Army Alpha Air Tank Builder Halo Hopper Upgrade Air spring return

Air spring return

then snap back to hold everything securely in place

and a carabiner clip for easy attachment to your gear bag

soft earpieces

HK Army Alpha Air Tank Builder Halo Hopper Upgrade Air spring returnThe HK Army Alpha Air Tank Builder lets you put together your own complete air system, one order at a time. Choose your carbon fiber bottle size and the regulator that matches your setup, and it ships to you as one matched, ready to fill system no guessing whether parts picked separately will actually work together. Every bottle in the HK Army Alpha Air line uses the same lightweight carbon fiber construction and 4500psi rating, whichever size you