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Gunsmithing Source for Mini M16 extractors ?

Defiance will require a call but I think I got some from them as well
 
I ordered and received the Mini m16 extractors from LRI but didn't get a drawing with measurements for machining . I emailed them asking but they must be busy haven't received a reply .
The info for the 308 size extractor are all over the place not sure on how deep the cut is compared to the 223 ?