Outer Barrel OB-003 PreviousOB-002 NextOB-004 OB-003 OB-003 $0.00 Add To Cart Facebook0 Twitter Pinterest0 M4 CQB Outer Barrel280mm LengthMetal You Might Also Like OB-018 $0.00 OB-001 $0.00 OB-011 $0.00 OB-016 $0.00 OB-013 $0.00