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PWS piston upper question
I'm looking into buying on of their piston uppers. I'm seeing two twist rates used and want to run super and subs. Looking to see which one would be the most reliable. Any input is appreciated.
MK1 MOD1-M - 1:8 or a 1:6
MK109 MOD 2-M - 1:6
u/BORIStheBLADE1 — 7 days ago