Prometheus EG Barrel 363mm for M4A1, SR16, SG551 HK Design for RIS RAS Picatinny

Design for RIS RAS Picatinny Rail System of Airsoft AEG Rifle

4V 2400mAh Battery

Bipod stub is ready to install any generic bipod

Prometheus Metal Bushing w/7mm Bearing

Large magazine loading capacity: 25 Rounds

Prometheus EG Barrel 363mm for M4A1, SR16, SG551 HK Design for RIS RAS PicatinnyPrometheus EG Barrel 363mm for M4A1, SR16, SG551 For Tokyo Marui M4A1, SR16, SG551 Airsoft Gun High grade precision barrel at 6. 03mm diameter for extra power and precision shooting Choose this barrel to suit your model For custom upgrade user, you can choose a longer barrel PROMETHEUS EG Barrel by LAYLAX (JAPAN) NOTE: You can always choose a longer Barrel if you have a extended Outer barrel installed