Please read my answer very carefully. I want to help you the best I can. To that end, I am going to say some things that may come across as harsh or possibly even insulting. They are NOT directed toward you! (Well, unless you identify with what I'm saying, in which case I cannot be responsible for how you respond.)
There's no such thing as a "tactical" .22LR. Even the rifle "METROPOLIS1" describes is not "tactical," any more than a standard handgun is a tactical handgun.
All "tactical" is... is a BUZZWORD. It's a word used by gun and accessory and clothing manufacturers to separate fools from their money more quickly.
Because manufacturers know that "tactical" sells junk. Take a $3 Chinese knife, slap the word "tactical" on the box, and you can sell it for $25. Take a $5 flashlight, call it "tactical," and you can sell it for $50. Paint a regular toothbrush black, call it a tactical toothbrush, and you can market it to the mall ninjas for $12.
Because some idiot, somewhere, will pay that much.
So let's discuss .22LR rifles. First, let's discuss their uses in the hands of someone who is not in any military or other armed service:
1) Target practice.
2) Competition-level shooting.
3) Small game/small varmint hunting.
4) Plinking, which is a form of target practice but in an informal setting and usually with nonstandard targets such as tin cans.
I cannot think of another appropriate use for any rimfire rifle. If I missed any, I'm sure someone will correct me. Notice that three out of the four uses are TARGET shooting of some sort. Nowhere is there a listing for room clearing, home defense, shooting out lights as you run across a compound yard... Nothing "tactical."
Now, let's discuss .22LR rifles and how they're priced.
1) There are the bare-bones .22LR rifles that don't cost much. These are the meat of the .22LR market. Almost everyone owns one. Ruger 10/22, Savage 64, Marlin 60, Marlin 795, Mossberg 702 Plinkster, Remington 597, Savage Mark II, etc. Less than $250; most are significantly less.
2) High-priced competition rifles. Single-shot or repeater bolt-action rifles that are used in competitions like the biathlon; expensive, sometimes thousands of dollars, but are designed for exacting specifications suitable for whatever competition they're for. Way out of the scope of what you want.
3) Mid-cost .22LR rifles. The CZ rifles are a prime example of this. So are the Henry .22LR lever action rifles, and the Marlin 39A. To me, these don't really appeal. $500 or so spent on a .22LR is excessive to me; other people disagree. If you want to spend more than $250 on a .22LR though, this is where I'd recommend you go.
4) The "tactical" style .22LRs, such as the various .22LR AR-type rifles and the Mossberg 715T. These are what I think you're looking for, and I'm about to tell you why they aren't worth the investment.
Specifically, the "tactical" style .22LRs are overpriced, in my opinion. That's because most are either the same internals as a cheaper rifle (the Mossberg 715T is basically a Mossberg 702 Plinkster with a bunch of plastic junk festooned on it), or they are no serious improvement over a less expensive rifle.
The S&W M&P15-22 is not a bad rifle... except when you see the price tag. The MSRP for those rifles is $500! The street price would probably be around $400, but still... $400 for a .22LR? It better be one incredibly fine, incredibly accurate rifle for that sort of price. And while I love S&W as a whole, the M&P15-22 is going to be no more accurate than any of the entry-level .22LRs like the Savage 64, Marlin 60, or Ruger 10/22. In fact, I would trust the Marlin 60 to be more accurate.
The Mossberg 715T, as I mentioned, is basically a Mossberg 702 Plinkster action shoved into a plastic frame that vaguely resembles an AR-15. Guess what? I saw a Mossberg 702 Plinkster for $109 a month or two ago. The 715T costs about $250-$300. Almost THREE TIMES THE PRICE.
Do you see where this is going? The word "tactical" is just a word... but it's a word that marketers know will inflate prices. Don't buy a "tactical" .22LR. Not only because there's no such thing, but because you'll pay way more than the gun is actually worth.
Because a fancied-up .22LR semi-auto is still a semi-auto .22LR.