BC Bright Barrel 363mm HK417+・M4A1・SR-16・S-SYSTEM・R.I.S.

PROMETHEUS BC BRIGHT Barrel Series

●Inner bore width of φ6.05mm with a ±0.01mm tolerance!
●BC Bright Coating reduces corrosion, oxidation, and rusting.

Inner barrel bore width of 6.05mm with a tolerance of　±0.01mm, made of brass for the best balance of strength and accuracy providing great cost-performance. 

■The barrel is arguably the heart of any airsoft gun and determines various performance factors such as velocity (FPS), accuracy, and precision (consistency). Real steel guns have a single metal barrel while airsoft gun barrels come in two pieces, an inner and outer barrel. The outer barrel reproduces the appearance of a real steel barrel, while the inner barrel is the actual barrel which fires the BB. 

■The BC Bright Barrel Series is based off of the Tokyo Marui specification barrels. BC Bright Barrels fit a variety of guns and outer barrels, so you can choose from a wide selection of barrel lengths that best suits your own custom build!