Prometheus precision barrels are by far the most popular models on the market. The Japanese are notoriously perfectionists and this race shows that too. The power barrel is made of steel with an inner diameter of 6.00mm and is the right length for the Umarex Glock 17 series. Like any precision barrel, the Prometheus barrel should be cleaned occasionally.

Annotation:

Only good quality BBs should be used for this run.