- Out-of-Stock
Hybrid 6.01mm Precision Inner Barrel 285mm for M4 CQB-R, MC51
1st Class Stainless Steel + Aircraft Aluminum Alloy.
Extremely Straight with High Rigidity and Accuracy Guided by an O-Ring to reduce barrel vibration.
Comes with a Modify 2-Ring+ Hop-Up Bucking, Airtight up.