FTN.5 rimfire is hard to beat for sound. The OKB-69 Maus is the shortest of those I’ve actually heard but it’s quite a bit louder than the FTN.

For polymer suppressors it’s always a trade-off between sound and size. Also keep in mind that on semi auto you’re going to get a certain amount of sound from the residual pressure when the action opens even with the best commercial suppressors. Printed cans are no different.

The FTN.5 seems to be the quietest can at the moment.

Short and lightweight will always mean louder, its just the tradeoff you have to make. Larger with more baffles tends to mean quieter with the tradeoff of size and weight. Although being 3D printed the weight isn’t anything like 17-4 stainless or inconel.

I’m working on a 22lr version of the B&T MP9 reduced back pressure can. It’s a flow through but massive for a 22lr so the increased volume should make it pretty quiet. But shes big. Unlike most print in place cans, this will need printed individually and assembled due to overhangs and support constraints. It’s direct thread for a 3/4x16 to 1/2x28 adapter. Still a work in progress though.

Short -Pill Popper V2, Scout’s ShortStuff, Shortwinder remix -All have cool patterns

Regular sized -MAGA Suppressor & FTN.5

All cans listed are movie quiet when shooting under 900 FPS CCI subs