Prometheus EG Barrel 550mm for M16A1/ A2/ VN/ AUG

Prometheus EG Barrel 550mm for M16A1/ A2/ VN/ AUG High grade precision barrel at 6.03mm diameter for extra power and precision shooting Suitable for M16A1/ A2/ VN/ AUG AEG Rifle For custom upgrade user, you can choose a longer barrel PROMETHEUS EG Barrel by LAYLAX (JAPAN)