[LegendHasIt]

Only the 44 mag ones (I wish Ruger was still making the .44 magnum semi-clone of the 10-22) can beat mine, and the 10MM ones equal it: Mech-tech 'upper' receiver in .460 Rowland.

That is the least expensive (yet well made and reliable) way to get into a pistol carbine, if you already have a Glock or 1911 'lower' to mate with it.

[Elderberry]

I thought very hard about going Mech Tech, but my son won out in convincing me to go with an AR 15 upper.

So I went with the 358 Yeti instead. The 358 Yeti pushes a 180g projectile up to 2600fps from a 16" barrel and a 200g to 2500fps.

And I can reduce down to shoot 38/357 pistol bullets.

[Mariner]

Th pistols at the Rowland conversion site are not designed for that kind of stress.

And they will soon show it.