This metal buffer tube fits all KM4 Series AEGs

the EPG-C has a reduced grip angle versus a standard M4 grip that's more compatible with modern carbine gunfighting and CQB stances

they represent a huge leap forward in technology

Integrated Auto Locking Quick Release Mount

Piston Head - Double O-Ring Version Gate This metal buffer tube fitsFeatures: Precision CNC Aluminum Construction Double O Rings for better air seal higher velocity Improved durability over factory plastic nozzle Smaller vent holes along with negative air pressure help bb feeding Proprietary O Ring compound for maximum durability and air seal Ball bearing mount for smooth operation Suitable for higher power (<M120) lower ROF (>25bps) applications Compatibility: Most Gen 2 AEG Gearboxes Material: 6061T6 Aluminum Alloy