Check the listing for details. [3D Bro](AOBS)Airsoft TRI-TEK-L Muzzle EXTENSION OVERLAP REP. Condition: New. Listed at 14.50 USD. Fits -14mm CCW (If you need +14mm CW let me know so i can redo design)Black PLA + PREMIUM MATERIALOriginal "AOBS" design threads start deep into the design as opposed to traditional screw-ons at the beginning. To install: Firmly grip and rotate counter clockwise. Does not contain internal baffling, foam, etc. It is hollow. See technical drawing for more details. There is no guarantee that this can suppress or reduce the noise of your airsoft gun - it is simply a cosmetic item. This listing complies with eBay's air gun policy and I will only ship air guns to buyers in jurisdictions where permitted to by applicable lawshttps://www.ebay.com/help/policies/prohibited-restricted-items/airsoft-air-rifle-bb-guns-policy?id=5045 Feel free to any questions.