Kevin Stenberg
Well-Known Member
I was looking at Bear Creek Arsenal barrels. They list a 1 in 8 5R ROT. What does the 5R stand for?
This will be going on a PSA upper 16" carbine barrel with a standard cheep hand guard. And changing it to an 18" midlength gas system and free float handguard.
This will be going on a PSA upper 16" carbine barrel with a standard cheep hand guard. And changing it to an 18" midlength gas system and free float handguard.