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THIS 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.
T-N.T. APS-X Hop Up System Inner Barrel Retrofit Kit for GHK M ( 370mm )
| SKU | TNT-RK-GHK-M-370-B |
|---|---|
| Manufacturer / Brand | T-N.T. STUDIO ( TNT ) |
| Color | Black |
| Major Built Material | Metal |
| Inner Barrel Length Size (mm) | 370mm |
| Size | N/A |
