TNT Studio 6.03mm H+ steel inner barrel + APS-X hop packing for vsr10 (554mm)

New hi quality steel tempered inner barrel with absorbing double fabric tickness
made by single metal billet and processed by ultra polished finish
enlarged hop packing hole and various slots for gas/aeg/bolt rifle system
new aerodynamic ejection system with internal front groove design

package includes:
-precision inner barrel
-aps-x hop packing

The New TNT system H+ design are made by using more tickness construction to absorbing the gun vibration while shooting. This makes bbs coming out straightfroward,
furthermore gots in the barrel end a precision groove portion that stabilize the external turboolences, creating just out of the barrel an accurate bb trajectory with longer range and incredible precision.
The new APS-X hop packing with double impact point enhance the hop effect to the max range

PS: the thickness of the barrel needs gun end cap modification, that need to be enlarged to hold the new part diameter