Ruger 10/22? In the beginning they were all bolt actions based on the Remington.
Now they are an answer for those not wanting to buy an SBR stamp and that is where the focus of the market is centered. Basically a semi auto battle carbine sans stock.
The "difficulty" is that there are very few other receivers for sale stripped or sans "rifle" designation to fashion into a pistol. When the market is focused on the AR15 and AK47, about all you get are "assault pistol" looks.
There is also the implied use of the resulting firearm as expressed in the lack of stock. It's hard to get away from our collective impression of what the purpose of the gun will be. Even if you disguise it as a prop from Planet of the Apes it's going to be seen as a Personal Defense Weapon and there's the rub. It's much larger and bulkier than a handgun and because of that will be seen as possibly using a rifle cartridge - which makes it "high powered." Add a magazine for feeding and we wind up right back where we started.
If it appears to be a gun then somebody is going to be "offended" anyway. And most of us don't plan on paying extra just to avoid "appearances" when where and how we use it is our business, not theirs.
I can use my 16" 6.8SPC for hunting (if I could pry it out of my youngest son's hands) or I can use the AR Pistol which is also effective at the ranges I can see deer in the broken hilly woodlands I hunt. Both look like "deadly assault weapons" to some people regardless. Not my problem. If they want to come out to the woods and act as my beaters moving the game, I welcome their help.
The "looks" of a pistol and appearing offensive to someone is their intellectual resolution, not my guideline on what I can do.