Action Army 6.01/6.03mm Precision Tight Bore AEG/HPA Inner Barrel | 250mm - 510mm Inner Diameter:6.03 Safety Mode Support: Designed to

Safety Mode Support: Designed to remain field compliant by allowing the safety to be engaged

We pre-polish the stainless steel to a glass finish and include dust blockers to keep it that way

Polarstar Type 1 UGS

An FCU (Fire Control Unit) is needed for all Polarstar rifles with the acception of the Polarstar Kythera

Action Army 6.01/6.03mm Precision Tight Bore AEG/HPA Inner Barrel | 250mm - 510mm Inner Diameter:6.03 Safety Mode Support: Designed toIncrease Grouping Accuracy. Increase Power FPS. Increase Range Distance (Maximum Range Effective Range). Made out of High Quality Metal with Electrolysis Nickel Coating Designed with an AEG style rifle in mind. Will not work in a VSR.