finishing up a pistol build(waiting on stamp) and ordered a .625 from Rainier. Going to be running it suppressed 99%.
If I may check what I have learned form the thread;
-start with an H2 buffer (more reciprocating mass to function properly)
-No problems fitting under KMR or MI KM (not sure which I want to put on yet , I have both)
Will I want to start tuning from the closed position or open?


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