I use the Sig MSR with both my 15-22 and 15 Sport II rifles as well and have zero regrets. My 15 Sport II doesn’t have the fixed sight though…just the gas block which I mounted a Magpul iron sight on.
That's pretty much what sold me on the 15-22 over the Tippmann. Both rifles are getting great reviews and the Tippmann did feel a little more robust...but I felt drawn to the 15-22 after using my wife's and S&W has always been known for reliability.
I guess I just need to try and be a little...
Having just purchased my 15-22, I had no idea that the 25 rounders were ever hard to find, so thank you for that bit of info. Gives me a little more hope that maybe we'll be seeing some 10 rounders soon.
I'm a new 15-22 owner in MA experiencing the same problem. My wife bought one used a week before me and I liked it so much I bought my own. The real kicker is I had the option of buying the Tippmann M4-22 for another $80 but decided with the S&W name brand & known reliability that it wasn't...