Do you mean a barrel threaded at the breech end, or at the muzzle end?

 

At the muzzle end.

 

I have not seen any made with a TB... I am sure it can be done but I question WHY? Most muzzle devices for airguns are slip on with a set screw... If you are thinking of adding some sort of suppression device I still dont see the reason for a TB... Muzzle pressures are in no way high enough to require such a strong attachment method...

 

A suppressor does help , it makes a big difference to even a BB gun. I am also looking for a pellet gun with a threaded barrel that means at the end of the barrel for a suppressor. You can get a adapter that fits at the end of a barrel that is a set screw, and the other end threaded, but you will have to do some modifications to make that work. Or just get the end of the barrel threaded. I have a supercharger, vortex, pistol, pellet gun that has a threaded barrel, but it’s heavy as hell.

 

Just purchased the Sig Sauer P226 air pistol (.177 Cal) which has a threaded barrel. The cost was $99.98.

 

I stand corrected,,,,

 

A popular, inexpensive way to go is a Crosman 2240 with an adapter like this...

http://www.ebay.com/itm/301480192644?_trksid=p2060353.m1438.l2649&ssPageName=STRK:MEBIDX:IT

Airgun + adapter is under $100.

If you're just looking for noise reduction, a 2240 + TKO brake (no adapter required) would run you ~$120...

http://www.tko22.com/

 

I have been modifying and shooting Crosman of the 2240 variety and derivatives for many years and I agree with Vee3 100%. The 2240 is a great pistol. Vee3 didn't mention that the 2240 shoots very small patterns and is very consistent at it.
It uses standard size CO2 cartdriges that Walmart always carries. Each cartridge is good for about 25 shots.
I do prefer it in .22 caliber as it carries more energy and is good on squirrels and other criters of that size (or smaller).
You can order it from Crosman customer services in different configurations and it will come with a pretty decent trigger.
There are entire forums dedicated to the Crosman airguns as well as a lot of manufacturers of custom parts.
Can't get wrong getting one.

http://www.crosman.com/airguns/air-pistols/2240-pistol-22

 

Factory threaded? No. Sub-$100 Crosman or Daisy with a Buck-Rail suppressor kit? Yes. Have one for my M4-177, you can hear the hammer hitting the release valve, it's that quiet.

 

A little above your budget, but you get the rifle and pistol barrels:

Diana Chaser Rifle Kit | CO2 Air Rifle | Airgun Depot

Check out this great deal on the Diana Chaser Rifle Kit. Need advice? Let our airgun specialists help you today!

www.airgundepot.com

I own one and it is a blast to shoot, accurate, and quiet with the moderator on either barrel.

The "moderator" can be removed from the rifle barrel by heating it up a little in the oven to loosen the lock-tite they use.

I shoot mine regularly in the pistol configuration @ 10 yards using a pistol scope in my apartment and have had no complaints from my neighbors.