GHK Colt Licensed M4A1 SOPMOD Block II MK18 GBBR Shadow 2 - Power: 1x CR2032 (not

- Power: 1x CR2032 (not included)

We find this verry usefull in custom builds when you have so many hop up unit and buckings

Leviathan - V2 optical is not compatible with these gearboxes:

polymer grip

metal keymod handguard and a selector switch with a heavy duty detent that gives the user tactile feedback when changing fire modes

GHK Colt Licensed M4A1 SOPMOD Block II MK18 GBBR Shadow 2 - Power: 1x CR2032 (notComes with orange tip. Features Full metal upper and lower receiver with stamped Colt trademarks One piece metal barrel assembly CNC machined Daniel Defense licensed RIS II aluminum alloy handguard with laser etched trademarks allows for easy addition of any 20mm accessories Flat top receiver makes mounting optics or other accessories easy Adjustable CRANE style stock and polymer pistol grip CNC bolt carrier group with negative pressure blowback