Updated core, fixed a problem I identified with the flow being too direct and thus not slowing the gasses down enough. Works in 1.355" ID tubes. Central bore is 10mm. Also added a gap near the front where the gasses can all mix together for those who dont want to drill out a dozen holes into the top of their can. It will still improve performance if you did, but the front chamber should assist with lowering the gas pressure still. Version 2 and 3 were not published as I didnt like the flow characteristics and they didnt improve on the design of V1.

LBRY Tags: 2a; ftn; oil catch can; suppressor core; 3d printed