GHK Colt Licensed M4A1 SOPMOD Block II MK18 GBBR Shadow 2 those seeking to balance performance

those seeking to balance performance with cost would use SHS 12:1 and 13:1 gear sets

- Power: 1x CR2032 (not included)

Instructions Manual

Leviathan - V2 optical is not compatible with these gearboxes:

CNC process with heat treatment

GHK Colt Licensed M4A1 SOPMOD Block II MK18 GBBR Shadow 2 those seeking to balance performanceComes 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