- Sat Oct 21, 2017 8:59 am
I just finished (crossing fingers -- one is never "finished" building a firearm) building a 9x23 Win. upper for my .22 TCM/9mm TAC Ultra MS HC. I used an Armscor 9mm slide and a Fusion Arms 9x23 Win. bull barrel and a full-length guide rod. The small parts for the slide came mostly from Fusion via eBay. I am using a 20 lb. recoil spring as I load my 9x23 ammo at least as hot as factory Winchester. I aim for 1500 fps with a 124 gr. XTP bullet out of the 4.25" barrel. I had the usual amount of "tuning" to do to fit everything. As well as 9x23 Win. it also fires .38 Super just fine. This little MS is ridiculously accurate -- the first time out to the range I fired nine rounds at a full-size B-27 target and 8 were in the X-ring with the ninth just outside it. All nine were within a 2" circle.
This was only at about ten yards, but it is better than I usually shoot -- by quite a bit.
So that's what I have now, a RIA TAC Ultra MS that can use four different calibres, one of which gives .357 Magnum level ballistics and does it with fine accuracy. I had to buy all my parts new as I don't have a stash of 1911 spares, so it cost me about $500 to make the second upper. Not the cheapest option, but versatile -- and I don't have to re-adjust the sights when I go from .22 TCM to 9x23 Win. and vice-versa.