Quote Originally Posted by rmecapn View Post
I don't know, Grant. This is the question I posed to them in my email:
"I was wondering if you could tell me if you magnetic particle test your AR-15 bolts? If so, do you mark those bolts as being MP tested in any way?"

And the reply above is what was returned. It is my understanding that batch testing is sufficient to meet the requirements of the TDP. However, if they told you they were testing each individual bolt, then I'd say you were definitely mislead (intentionally or not). Is this similar to the issue that S&W had with them?
I do believe batch testing is just fine and I personally use a batch tested bolt in my OTD gun.

I have not purchased any new bolts from CMT for over a year so the bolt you have is most likely MP tested as at that time, everything was MP'd.


C4