Verified working on: JG FAL ✅ 6mm Proshop FAL✅ Echo 1 SA58 ✅ Classic Army SA58 ✅ Made out of heat resistant material. You don't have to worry about it melting or deforming in a hot car. If you are interested in anything else 3d printed send me a message. I think I am the only person on Hopup offering carbon fiber polycarbonate 3d prints. Have a print job that needs true durability? Contact me today or visit my website/ e-shop to learn more. https://www.cedar3d.com/