Description:
Precision barrels are best described as an inner barrel with a diameter of 6.03mm or less. Precision inner barrels allow for better compression, improved accuracy, and in a few cases increase muzzle velocity. Although precision barrels often require more maintenance and cleaning, they can give an AEG a greater range and improve the overall performance of an airsoft AEG.

Specifications:
Manufacturer: JBU
Material: Stainless Steel
Bore Diameter: 6.03 mm
Gun Type: MK5
Barrel Length: 229 mm