You can get a dedicated 22 upper for your M&P 15. You can have it delivered directly to your door, no FFL required. CMMG and Armalite are two good choices, there are others.
Well, that could prove a formidable deterrent. I think most people fear being hacked up more than they fear being shot. It's mere display would probably do the trick. You'd probably want a plainer version for real world use though.
God help me, a Kahr P45 just came out of pawn (defaulted) and I put it on the wall for sale. Now I want it so bad I can taste it. 20 oz, 6+1 shot, very thin .45ACP pistol. Please let it be sold by the time I come back to work next week or I won't be able to resist it any longer. Can y'all hear that?.......it's calling to me.
An airline pilot was getting ready to leave the house, on his way to the airport for yet another cross-country flight from New York to Los Angeles. As he was lacing up his shoes his wife asked, "how is it you can fly 3000 miles across the country, in the dark, through clouds, and come out right over Los Angeles when you can't even manage to keep track of where your shoes are?" He turned to her and said, "that's easy, my dear; no one moves Los Angeles."
I ordered a GSG Kalashnikov .22lr a couple years back and they accidentally shipped it with a 2 round magazine. It was the same length as their 25 round mag but totally different internals. GSG shipped me the correct magazine and I got to keep the 2 rounder. It puzzles everyone who sees it.