Answer
Nov 18, 2025 - 09:17 AM
The difference between a 6.01 mm and a 6.03 mm inner barrel is the diameter of the bore: 6.01 mm barrels are tighter, which can improve accuracy and FPS by reducing air loss around the BB, but are more prone to jams and require cleaner BBs. In contrast, 6.03 mm barrels are slightly wider, offering a good balance between performance and reliability, with less risk of jamming and easier maintenance.
