Sub 12 ft lb Rifle in the States

Every time I look at rifles online, I can hardly fine a Sub 12 ft lb rifle for sale here in the United States. Every now and then Pyramyd Air will have a refurbished Air Arms, but they are hard to find. I've even contacted a distributor to see if I could special order a sub 12 ft lb rifle and I was told I'd have to adjust the regulator and tune it because they don't import the lower power rifles. Don't get me wrong, I absolutely love a high powered PCP, but I do find it would be nice to have a low power rifle for small critters and accurate plinking without having to fill very often. I have a permission where they need rats taken out of their pig barn and I don't think my .25 Impact or .22 Marauder would be the correct tool for that. I'm debating on using my sons .177 Maximus because it's spitting them out with authority. My son doesn't want me to re tune his rifle and I don't feel up to messing with the Impact or Marauder because they are right where I want them to be. I find it odd that there isn't a bigger market in the States for sub 12 ft lb rifles. I would love to get my hands on a "legal limit" Air Arms TDR or a Leshiy. I know I can adjust the Leshiy to do what I need it to do, but I already have enough rifles that I tinker with. I'd like an out of the box light weight low powered pcp. Crosman does offer the 12 ft lb Maximus, but I'd like to get something a little more refined. Any ideas why there isn't a bigger market in the U.S. for low power PCP rifles?
 
That's about the power I'm getting with the Maximus. I know Brocock makes a fine rifle, but that is still more power than I'm looking for. I want to be able to shoot birds indoors (aircraft hangar) without the risk of doing damage. The more I think about it, a sub 12 ft lb rifle would fit in my collection perfectly and be used a good portion of the time. 
 
That would be a great idea. I've always wanted to get my hands on an Air Force rifle. For what I'd be doing, co2 would do just fine. I doubt I'd be sitting out in the cold, so I wouldn't have to worry about the velocity drop. I'm still not sure why airgun manufactures wouldn't offer their low power rifles in the U.S. There has to be a market for them. 
 
Helimech I have the FX Royale 400 in .177 and in setting 1 it will more than fit the bill for your needs. Then, when you want to dial up the power, all you have to do is turn the knob on the side. Just an idea. Here's a post I made some time ago with chrony readings on some different pellets.

Keith.

http://www.gatewaytoairguns.org/GTA/index.php?topic=25024.0
 
The places I have checked for the classic TDR only have the full power rifle. I really like the TDR, so I'll do some further research. The BSA Ultra is a sub 12 rifle, I didn't know that. That's the best part of these forums, you can easily get information with the ease of not leaving the couch. I guess with all of the rifles coming out with adjustable power, there's no sense in shipping over their low power versions. 
 
I bought my Impact from Jim at Precision Air. He's close enough for me to go in his shop. He's one of the nicest guys I've ever had the pleasure to deal with. I did look at his website and yes, he does have a huntsman in sub 12. I guess there are more options than I thought, but I still find it odd that there aren't many sub 12 guns to choose from. it's probably because of the adjustable power settings manufacturers are installing, but I would have to think a full time sub 12 rifle would be more efficient than an adjustable rifle.