sailskidrive
New member
Does anyone know if RRA uses A-158 steel for their AR bolts? I've tried emailing them several times and they have not responded. I've also called their customer support line and they beat around the bush about the quality of their manufacturing processes but never answered the question.
A friend of mine who does machine work, told me that most of the suppliers use A-158 that is magnetic particle tested before it is cut to length and machined. He also kind of snickered that not much attention is probably paid to the process.
The reason I ask is that a local shop has chrome RRA bolt carrier groups for $159 and I thought maybe I would pick one up to replace the one I have that broke. However, I don' want to go down this route again so if they are made from 9310 steel I was going to pass and buy a Rainier Arms Thunder Bolt instead.
A friend of mine who does machine work, told me that most of the suppliers use A-158 that is magnetic particle tested before it is cut to length and machined. He also kind of snickered that not much attention is probably paid to the process.
The reason I ask is that a local shop has chrome RRA bolt carrier groups for $159 and I thought maybe I would pick one up to replace the one I have that broke. However, I don' want to go down this route again so if they are made from 9310 steel I was going to pass and buy a Rainier Arms Thunder Bolt instead.