HDR50L TR50L 30J - 40J Steel Tuning Barrel Kit M4 - Gets you on the

- Gets you on the field fast and doesn't break the bank

Modeled after the U

Biodegradable and environmentally friendly

- Machined aircraft-grade aluminum receivers

and control

HDR50L TR50L 30J - 40J Steel Tuning Barrel Kit M4 - Gets you on theThis barrel kit has extreme tolerance (12. 7mm . 5inch bore) to increase the output of the TR50L HDR50L to 30 to 40 Joules when combined together with the power kit. Without the power kit you will get 20 30 Joules. The barrel kit comes in 2 parts, the barrel with a thread protector and the 4 inches barrel extension. Add on the barrel extension increases 3 to 5 Joules. The final power output is depending on the type of air and ammo used. Made in