Tokyo Marui M4A1 Handguard Ring Spring For Carbine ZET System GBB (# MGG2-12)

Tokyo Marui M4A1 Handguard Ring Spring For Carbine ZET System GBB (# MGG2-12) Metal Construction Design For Replace the Origianl Parts (# MGG2-12) Suitable for M4A1 Series Airsoft Gas Blow Back GBB Rifle