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350mm Outer Barrel With 68mm Flash Hider
External hammering system
and IR Illuminator coaxially mounted for easy zeroing
Modified and tool-less adjustable gas system knob regulator for quick HOP-UP adjusting use
RA Tech Magnetic Locking NPAS Aluminum Complete Bolt Carrier Set for GHK M4 GBB Net-Weight-(g)_1544 350mm Outer Barrel With 68mmRA Tech Magnetic Locking NPAS Aluminum Complete Bolt Carrier Set for GHK M4 GBB Aluminum Construction A NPAS for tuning FPS levels for your Rifle This unit also features a universal tool for precise adjustments Suitable For GHK M4 Series Airsoft Gas Blow Back GBB Rifle Airsoft Guns
