JBU 500mm Tight Bore 6.03mm Barrel for M14(19.68in)

JBU Aluminum 6.03mm Tight Bore inner Barrel 500mm Teflon Coated, Anodized Aluminum finish. Increase FPS by 10-20 without additional modifications. Compatible with M14 series. Special order. Please allow 7-14+ days for delivery. No returns.