There are some things to make it operate smoother and they are in previous posts if you do a search.
Many people have used the PTG bolt bodies.
From experience: Do not use a fluted bolt body from PTG
You can spec your OD if you buy direct. Make sure you have the ability to measure the raceway bore so you don't purchase one that is too large or too small
Be prepared for the cocking ramp to alter the way the bolt close feels as the timing could be slightly different. (Never file the edges of the bolt head trying to improve a mistimed cocking ramp. It is not the problem)
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