06-18-2020, 10:33 PM
I am unfamiliar with this problem so I went looking on Arf.com.
One guy solved a similar problem of rings burning up after a few rds by swapping out the rings for better quality Colt's (no change), then the carrier (no change), and finally the bolt (success). It was an out of spec bolt.
Other advice was to make sure the square/sharp cut side of the stamped rings were all facing the rear so they don't bind together and they also act like cutters for the carbon build-up. I have not heard of this before and regardless, he tried this and it did not fix the problem.
Other advice was the usual... make sure the gaps don't line up and when replacing fit the rings from the back of the bolt; don't come in from the sides.
One guy said to check the inside of the BCG and make sure there was no factory machine marks or burrs on the chrome lined section than acts as the walls of the piston.
One guy solved a similar problem of rings burning up after a few rds by swapping out the rings for better quality Colt's (no change), then the carrier (no change), and finally the bolt (success). It was an out of spec bolt.
Other advice was to make sure the square/sharp cut side of the stamped rings were all facing the rear so they don't bind together and they also act like cutters for the carbon build-up. I have not heard of this before and regardless, he tried this and it did not fix the problem.
Other advice was the usual... make sure the gaps don't line up and when replacing fit the rings from the back of the bolt; don't come in from the sides.
One guy said to check the inside of the BCG and make sure there was no factory machine marks or burrs on the chrome lined section than acts as the walls of the piston.