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Posted: 4/22/2016 10:26:44 PM EDT
There has been a lot of reports of bolt failure from bolts made from S-7 tool steel. I have used S-7 for years in many applications firearm related and other, with moderate success. I have a procedure I am now using with excellent success. It seems to alleviate the potential brittleness . If you are interested , E-mail me and I will share it with you. m16a1@comcast.net. Craig
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