PH+ Aluminum CNC Hop Up System for Marui TM MWS GBB Series (FITTED)(COMPLETE PARTS)

Compatible with Tokyo Marui M4 MWS GBB series.
Compatible with Tokyo Marui MTR-16 GBB series.
Compatible with receiver retrofit kits for Tokyo Marui M4 MWS GBB system. 

(FITTED)(COMPLETE PARTS)