Stainless steel Precision 410mm inner barrel from RA-Tech with a perfect inner surface. With an internal diameter of 6,01mm, a minimum air is flowing around the BB (higher pressure in the barrel) so you get a higher muzzle velocity and accuracy.
The barrel is made for WE GBB M4 / G39K / G39RAS / M4-A1 / M4-RIS / SCAR(L) and AEG.
The small diameter of 6,01mm requires the use of high quality BBs to avoid the jamming of the BBs in the barrel.
was established in 1995. It was original established as supplier for RA-TEC Survival Game Team (IPSC). After twice of expansion and relocation, it is now located at Hualien City, Taiwan. From 2002, RA-TECH started to promote its own products with its design focus primary to meet customer's expectation and demands. RA-TECH focuses on quality upgrade parts, accessories and conversion sets mainly for GBB.