GHK Colt Licensed M4A1 SOPMOD Block II RISII GBBR (Black) color-desert *Includes barrel nut

*Includes barrel nut

steel made tube ring

The system was designed as a mechanical system from the ground up and uses a realistic trigger mechanism which can be applied to single-shot

SCAR Style Threaded Muzzle Break

GHK Colt Licensed M4A1 SOPMOD Block II RISII GBBR (Black) color-desert *Includes barrel nutComes 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