6.03 GBB EG Precision Barrel – 370 mm

GBB EG Barrel
series precision barrels by Prometheus are compatible with a majority of GBB
replicas.

Barrels
from this series are considered to be one of the best precision barrels on the
market. This is due to the barrels having a low deviation regarding caliber
differences on the inside of the barrel and undergoing a rigorous quality
assurance. Barrels are made in Japan and are manufactured in a very precise way
from stainless steel.

EG
Prometheus barrels are also much more even, stable and definitely straighter on
the inside than a majority of other products available on the market.

We recommend using precision barrels only with precision BBs for a peak
performance.