For sale A&K M249/MK46 Upgraded with Madbull Black Python v2 tightbore inner barrel and bucking and a Bullgear CNC hopup unit. It also has an upgraded gearbox switch I have wired it to the rear to help balance it better, give more battery space and so you don't have to mess with taking off the handguards and outer/inner barrel I'm asking 300 and I will include all the original externals and the box mag I would prefer not to ship so local to Northeast Ohio only unless you wanna pay for my gas.