ThePenguinKnight
Member
- Joined
- May 30, 2007
- Messages
- 226
What grades of steel are acceptable for an AR15 bolt and bolt carrier? I understand 8620 and 158 carpenter are common. Is 4140 acceptable? Is it too soft?
What is the minimum grade of steel for an average user? I.e. for shooting <1000 roumds per year, would 4140 be acceptable for the bolt, but not the carrier (or vice versa)?
Thanks in advance.
What is the minimum grade of steel for an average user? I.e. for shooting <1000 roumds per year, would 4140 be acceptable for the bolt, but not the carrier (or vice versa)?
Thanks in advance.