I emailed AFM to ask about their parts and this is the response that I received.
William,
Yes, we only use current Military contract vendors. The vendors that manufacture our bolts and carriers have a larger customer, their biggest...FN. All of our parts are manufactured either by us, to MIL-STD, or by other current.Gov't vendors. The extractor spring and insert depends on the rifle, we use either A2, M4, or our proprietary heavy duty extractor spring with M4 or A2 insert, which is designed to eliminate failure to extract. Brownells buys these HD spring from us. We install the HD springs in every carbine we manufacture...semi auto only, burst, and full auto. It has eliminated this common problem entirely. Alot of assemblers use the D ring or O ring type BANDAID devices to help with a weak or poorly manufatured extractor spring. This is the wrong answer and they only last a while. Then you are right back where you started...failure to extract. We use them in 7.5" barreled machineguns all the way up to 20" rifles, suppressed or not. In any case, I hope this helps. Let me know if you require a sample spring for T&E.


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