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Inner barrels for GBB assault rifles such as MWS, MTR16, AKM, AKX and GHK GBBR platforms.
F-Factory Tokyo Marui Gas BB M4A1 MWS Custom Inner Barrel 250mm
EG Barrel 370mm for M4A1MWS (6.03mm)
GBB 370mm Barrel for M4A1 MWS (6.00mm)
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