New video of Brian of Echo1 USA Airsoft... "The new Hybrid tight bore barrel from Modify is 6.03mm ID. The barrel raises the FPS and dramatically tightens the grouping in the Echo1USA RedStar LMG. The overall barrel length is 650mm. Check out this video to see stock barrel vs. Modify Hybrid barrel comparison!

Thank You,

Christopher Dellosa
Echo1USA Marketing"