TNT Studio TW RETROFIT kit with 6.03mm steel barrel for ptw electric gun (455mm)

New hi quality steel tempered inner barrel with easy adjustment hop chamber 
made by single metal billet and processed by ultra polished finish
enlarged hop packing hole and slots for PTW electric rifle system
new aerodynamic ejection system with internal front groove design

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

The new CNC aluminum hop chamber is state of the art for sniper shooting system,anti shock rubber oring and easy wheel adjust are the stronmg point of this device 
The New TNT system makes is difference by having 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