King Arms M120 Ver. II Rear Wiring Complete Gearbox for M16A2 AEG 888c Metal made M4 hi-cap magazine

Metal made M4 hi-cap magazine (Grey Color) accommodate 300 Rounds of 6mm Plastic BB (compatible with most of other M4 Type AEG Magazines)

the RM4 offers the shooter a degree of functional realism not present in previous generations of AEGs

Modification may need for installing this kit on the other brand M4 GBB Series

- Sling mount can be installed with any sniper rifle sling

King Arms M120 Ver. II Rear Wiring Complete Gearbox for M16A2 AEG 888c Metal made M4 hi-cap magazineEssential part for upgrading your Airsoft Electric Gun AEG Version II Complete Gearbox To build a tight & durable Gearbox 9mm Bearing Enhanced Gearbox Rear Wiring Switches Set w Silver Cords POM Gear Sector Clip, Cylinder Head, Nozzle and Hard Piston with 7 Metal Teeth Metal Piston Head w Bearings Cylinder For 451 550 mm Inner Barrel Durable Tappet Plate Metal Anti reversal Latch Spring Guide with Bearings M120 Spring Completed Gearbox set ready to