If you can find a 5" lightweight barrel for the 41, that would work. It's called the Field barrel, basically a short 7 3/8" barrel (some discussion as to whether S&W made them as 5" or literally cut them down from 7 3/8" barrels). It makes the 41 into a great holster pistol. Good luck finding one at a reasonable price, they are pretty desirable.

Another alternative might be a Tactical Solutions upper for the Ruger, they are typically accurate enough for small game hunting and can be fitted with a lightweight dot if you want. On a 22/45 the 4.5" barrel will weigh 24 ounces without the suppressor. There's just not a real small semi auto that has enough accuracy for small game. I have a Walther TPH that I carry sometimes, but it's not quite accurate enough.

If I were looking for a lightweight tag along, that's accurate enough for small game hunting, I'd look to a S&W Kit Gun. My 39 year old S&W Model 43 Airweight Kit Gun (15 ounces) will give a pretty good account of itself.

[Linked Image]