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Hybrid 6.01mm Precision Inner Barrel 141 mm for MP5K-PDW

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.

Hybrid 6.01mm Precision Inner Barrel 229mm for MP5

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.

Hybrid 6.01mm Precision Inner Barrel 247mm for CAR15, P90, G36C, SIG552

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.

Hybrid 6.03mm 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.

Hybrid 6.01mm Precision Inner Barrel 300mm for G36K, M1A1, M733, 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.