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New to roller locks. I bought a PTR 9KT and 9CT.
I did the 80degree LP on the 9KT and it shoots suppressed very well (especially 115grn rounds). Unsuppressed it needs 124grn rounds though as it will chcke on 115grn. Came with a 110degree LP from PTR.
The 9CT has ran great with 115grn...