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Prometheus inner barrels for airsoft replicas.
6.03mm EG Barrel 407mm M4A1 SR16 SG551
EG Barrel 370mm for M4A1MWS (6.03mm)
6.03mm EG Barrel 363mm SOPMOD M4A1 SR16 SG551
6.05mm EG Barrel Returner 247mm G36C P90 CAR15 SIG552
Shore 50 Hardness Rhop Bucking for Prometheus EG Barrel
Shore 60 Hardness Rhop Bucking for Prometheus EG Barrel