TNT APS-X Hop Up System Inner Barrel Retrofit Kit for GHK M ( 510mm ) Slide Lock The most obvious part is

The most obvious part is the suppressor that comes with it that sits on a 14mm CCW thread

- For TRI COMTAC 2 / 3 Headset

Maple Leaf VSR CNC Light Bull Outer Barrel & Cap for 430mm Inner Barrel

WE G Model 18C Auto G Series Explosion Parts #G-2

36g 2000Rds 6mm Airsoft BBs

TNT APS-X Hop Up System Inner Barrel Retrofit Kit for GHK M ( 510mm ) Slide Lock The most obvious part isTHIS NEW amazing system was especially developed to replace and upgrade the entire GHK M4 hop up structure. with the ongoing demand for quality upgrade parts for GHK M4, TNT AIRSOFT STUDIOS has developed this kit which includes all necessary parts including a gbb hop up bucking and cnc hop up chamber. TNT APS X Hop Up System Inner Barrel Retrofit Kit for GHK M ( 510mm )