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M4 (T.Marui) Ø6.03 Copper Inner Barrel (300mm) for GBB 10.5" barrel + CQB Muzzle Brake
Item No. : 2172
This 6.03 precision tight-bore upgrade inner barrel is made by CNC process.
This 300mm length inner barrel is specially made for M4 (T.Marui) GBB with 10.5” outer barrel with CQB Muzzle Brake. While it provides tighter grouping and higher accuracy shooting, it offers best hop-up performance for longer shooting range.
All products are for airsoft only. They are not made for real steel firearms.