I know the popularity of .40 is on the decline but I'm surprised I don't see more feedback on the M2.0 compact in .40. The feedback I see is almost universally positive but I just don't see much mention of them.

I haven't really seen any mention of 9mm (or 357 Sig?) conversion barrels for either the 4-inch or 3.6-inch compacts in .40. I think I saw a Youtube video where a guy put a 4.25" barrel from a previous gen M&P into an M2.0 4" compact and it functioned but I'm curious about straight 9mm conversion barrels for a M2.0 compact in .40. Are they available somewhere? I looked a little at the usual suspects and haven't seen them.