The 158s feed and fire, but stovepipe. Unlike that 150 HST I think my 158 (and 165) is optimized for longer barrels. I tried the 158 just to compare in a G19 and it functioned fine.

Thanks for the heads up on the 150. I will try some. I don’t think the 147 is awful in the 26, but definitely not as comfy as the 19.