Weak point that will fail - Wheeler Engineering Upper Receiver Action Rod AR-15

Sorry, liked it after first use but that's all you will get out of it. Being able to "lock" in the chamber sounds like a good idea but this creates a very weak point and it doesn't take much for it to twist and snap. Yup, you might think that you are starting to loosen the barrel nut only to find out that the end was twisting before the snap. I was lucky and able to remove it (with a lot of effort) without causing damage to my upper.