Modify - Hybrid 6.03mm Precision Inner Barrel 363 mm for M4A1 New & Old Types/R.I.S./SR16, XM177E2, SIG551) Skinning - Unique manufacturing approach removes

- Unique manufacturing approach removes 60% of foam yet increases thickness by 290% when inflated

Made from durable aluminum alloy and rubberized wiring

Material: 600D Polyester

Molle side winder pouch

Modify - Hybrid 6.03mm Precision Inner Barrel 363 mm for M4A1 New & Old Types/R.I.S./SR16, XM177E2, SIG551) Skinning - Unique manufacturing approach removes1st 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. DESCRIPTION Modify's Hybrid 6. 03x363mm Precision Inner Barrel FOR M4A1 NEW & OLD TYPES R. I. S. SR16, XM177E2, SIG551 The Modify Hybrid Precision Inner Barrel is 363mm long with inner diameter of 6. 03mm, suitable for M4A1 New & Old Types R. I.