Backdraft Innovations - Phoenix M4 HPA Engine + FCU

Product Details The Backdraft Phoenix HPA Engine is shaking up the industry! As the only price-conscious full-feature HPA engine on the market, that is to be expected. Boasting 40+ rps, a psi range of 40 to 130, on the fly fire mode adjustment, all in a low maintenance, high reliability, high performance hpa engine, this HPA engine is absolutely the best bang-bang for your buck! Contents: ENGINE MODULAR FCU M4 TRIGGER BOARD (M4 Style Gearbox) GRIP LENGTH or STOCK LENGTH WIRE HARNESS INNER GRIP LINE WITH BRASS QUICK DISCONNECT