11-07-2020, 12:46 AM
Its good to see not so many issues now a days. I remember back when 5.45x39 surplus was dirt cheap I built an AR in that caliber, It was a bear to get it to function correctly and it broke extractors like nobodys business but I shot cases of surplus Russian 5.45 out of it. The bolt itself never failed , it used regular 5.56 extractors. I eventually modified one and got it to work properly with not so many breakages. I spent the extra money on the Cason bolt on my next build and it was night and day better. Seems like even the low end bolts hold up now.