NPT fittings on this STP allow you to use standard macroline fittings and hose. The custom valve body can be rotated through 30 degrees and the fitting on the front bottle mount can be repositioned and then locked in place by an Allen key. Dave has only made TWO of these custom valve bodies and bottle mounts. One is going to Canada and the other pair you see on this gun. She'll go on sale in January with the clamping feedneck. Current codename: 'Marathon'