You can get the Airsoftjunkiez G&G CM16 LMG Custom HPA Tan with the HPA enginer of your choice and more.. "The Airsoftjunkiez Custom G&G.CM16 LMG w/Box Mag and HPA  System. ThegG&G CM16 LMG is an excellent combination of assault rifle and Light Machine gun. You can easily make the gun more agile with the telescopic stock and add accessories to the various rails of this lovely gun. The gun comes with whopping 2500rd boxmag and a good quality grip pod which serves dual function as a front grip and bipod!**** doesn't include any accessories."