archwick vsr 10 lob 6 03 mm 430 mmFor those who demand maximum precision at long distances, ARCHWICK's 430 mm precision barrel delivers a significant upgrade to your VSR system. With an inner diameter of just 6. 03 mm and a polished interior, you get both increased range and noticeably improved accuracy especially in snipers and other setups where precise shots at long distances are essential. The barrel is made of durable brass and has a nickel coated interior that reduces friction