Features:
- Each extension comes with inner 14mm thread and outer 14mm thread
- Converts CQB-R to a standard M4 length barrel
- Convert M4 to use free float M16 style RIS
- Convert any AEG barrel with 14mm negative threads to longer outer barrel
| Material | Metal Alloy |
| Color | Black |
| Manufacturer | Matrix/Jag Precision |
| Length | LONG: 110mm MEDIUM: 55mm SHORT: 27.5mm |
| Diameter | 37mm thread |
| Threads | 14mm CCW |
DISCLAIMER: Please use discretion when installing custom parts as fit and compatibility may vary. Some modification may be required. Professional installation recommended.