Mishaped/out of round - AT3 Tactical Castle Nut for AR-15 Buffer Tubes

This castle nut would not thread on very easily and it clearly was bent/out of round. Ended up using a different castle nut and it threaded on just fine to the tube without excessive drag and binding like this one did. Not worth dealing with CS for a return since there is a restocking fee & I have to pay to ship it back. Very disappointing.