|  King Arms Airsoft Steel Replica Carbine Piston System
This Carbine Piston System followed the real firearm design which the gas block could be set at 4 different positions as user's preference. Package included gas block, plug, sleeve bushing and spring parts. Will fit AEG and gas blowback M4.
Material: Steel
Weight: 180g * Use for MARUI HI-CAPA 5.1/4.3 Blow-Back Series   
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