Congratulations, make sure you stay up to date with CT laws, No AR15, no threaded barrels even on pistols.
harry
(1) We can still have preban assault weapons. Some people myself included have a more conservative interpretation of the preban exemption and choose not to own specific banned by name models or banned by type models (Thompson, MAC, AK-47) from the old list, as a matter of cautious prudence. That said there are many places that will sell them under the more liberal interpretation that DESPP has put out there.
I have no concern about owning non-named/non-type prebans, such as my preban PWA AR.
(2) Threaded barrels are never prohibited on manual action (e.g. pump, lever, bolt, break action) and single shot firearms. A threaded barrel on a semi-automatic pistol is sufficient features to make it an assault weapon. On certain semi-automatic long guns (e.g. rimfire rifles) a threaded barrel is a countable feature, but is not inherently prohibited in and of itself (e.g. a 10/22 with a threaded barrel and no other assault weapon features is legal). [rimfire rifles are subject to the old 2-feature test, meaning that the presence of a detachable and 2 features makes it an assault weapon] With respect to semi-automatic centerfire rifles a threaded barrel is not an assault weapon feature in and of itself any more. PA 13-3 replaced the "threaded barrel designed to accomodate a flash suppressor" with the flash suppressor itself as being the feature.