So I guess my two ruger 10/22's with Butler Creek folding stocks would be included as well?
Yep they put a pistol grip on the firearm below the action.
Ironically, the term "Assault Rifle" means EXACTLY whatever any politician says it means.
No that is 'assault weapon' not 'assault rifle'.
Although the two often get used interchangeably adding confusion.
Assault rifles are an actual military item with a definition, which is becoming more fuzzy but is still well defined.
Assault rifles were designed to replace fully automatic submachineguns. Giving increased range and power over pistol caliber subguns.
They found the long range accuracy of many rifles at the time was wasted as few military engagements with small arms were that far away, and so something between a subgun and rifle would be better.
To accomplish this they used weaker cartridges than standard rifles suitable for man sized animals, these weaker cartridges now termed intermediate cartridges, and were designed to fire in fully automatic mode.
The selective fire capability was key to the definition, as the entire purpose of the weaker cartridge that would not hit as hard being utilized was to allow control while being fired fully automatic in the role of a submachinegun.
Without fully automatic capabilities they wouldn't have been using a weaker round to begin with, and would have stuck with battle rifle cartridges that were more effective.
The reason things are slightly outdated today is for example our own military retaining the intermediate cartridge, while primarily using semi automatic fire. While touting benefits like the ability to carry more ammunition.
While the whole purpose behind designs like the AK and original M16 were to compensate for reduced ballistics with fully automatic fire at closer ranges.
'Special forces' still use fully automatic capable versions which is what the platform was designed for, apparently the standard soldier is incapable of wisely using such versions.
Other modern forces can get away with this semi auto weak caliber rifle because they have a lot of other weapons, and 5.56 rifle fire is used more for suppression while bringing a heavy machinegun, more potent rifle, artillery, air support, armored vehicle, etc into the fight.
If the enemy stays put because they can't move without getting hit by 5.56 then something bigger comes along and kills them.
However if the rifleman's role was more like it was in the past they wouldn't be using 5.56 in semi auto. The roles the average rifleman used to fill now reserved for a designated marksman, which don't use 5.56.
While 'assault weapon' on the other hand means whatever they say it means. And includes handguns, shotguns, rifles, and various other firearms. The definition changes on a whim, and means something different in different states.
It often includes civilian semi auto versions of things like AKs and ARs and similar rifles as well, which is what many naive assume it refers to, but goes well beyond that to mean anything they want. In California a regular semi-automatic pistol with a threaded barrel is an 'assault weapon' for example. Just threading the barrel turns it into an assault weapon.
This is one direction being taken here in CA.
The thorsden frs-15 stock would probably not comply with CT law.
However another stock that put the trigger near the rear through some sort of linkage should. That position though could require risers on the rails to give proper height on the sights and optics as the hand would be in the way. It would also require that hand be removed to operate the charging handle.