Inner Barrel Prometheus EG 6.03 CQB-R/MC51 285 mm

If you want to replace the standard inner barrel of your replica, the Prometheus EG CQB-R/MC51 inner barrel is the right choice for that. You'll gain considerable accuracy with it, because a good inner barrel seals the air optimally and allows the hop-up to do its job much better. Combine it with BB's of good quality for the best result — that's how you get maximum performance out of it.

Behind those performances is mainly craftsmanship: the barrel is made with great precision. Expect an inner diameter of 6.03 mm, with a tolerance of no more than +/- 0.01 mm, and an outer diameter of 8.5 mm. The finishing is at a very high level. At the muzzle the barrel flares out slightly, so that the pressure decreases evenly and you don't get instability from a sudden pressure drop.

The stainless steel that the Prometheus is built from makes it rigid and difficult to bend; it withstands an impact better than the original inner barrel. An added advantage: stainless steel expands less than the brass and aluminium that most inner barrels are made of. If you fire many BB's in succession and the barrel gets hotter, you'll barely notice any effect on your accuracy. A solid upgrade for the shooter who takes his precision seriously.