Big Dragon STRIKE style ADVANCED CNC stock pipe for m4 rifle (black)

New CNC aluminium extreme light weight model
Super cool design model following the last MADE IN USA trends
larger inner layer to fit Lipo battery in
end top cover with retain screw
can take stick type 7.4 or 11.1V lipo battery
fit all kind of m4 slide stock
ideal use with Marui, g&g, g&p, ka M4 body