Defective barrel nut, weak mounting design, poor customer support - Odin Works Forend Ragna M-lok 12.5" Ar-15

Threads machined incorrectly on the barrel nut ruined the threads on my upper receiver. After 3 months Odin works has still not resolved the issue. Terrible customer support. It is a worthless paper weight now and I had to buy a new receiver. Also, the way it mounts is not very secure. The binder bolts at the bottom don't secure it tightly enough so they had to add set screws to the sides. Stay away. Just stick with the more proven reliable brands out there with better engineered mounting systems and good customer support.