6.03 GBB EG Precision barrel - 370 mm

6.03 GBB EG Precision Barrel - 370 mm

GBB EG Barrel Series precision barrels from Prometheus are compatible with a majority of GBB replicas.

The barrels in this series are among the best precision barrels on the market. This is due to the fact that the barrels have a small deviation in terms of calibre differences on the inside of the barrel and are subjected to strict quality control. The barrels are manufactured in Japan and very precisely made from stainless steel.

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

We recommend the use of precision barrels only with precision BBs for top performance.