Not sure what your State laws allow, so just guessing.
Find a way to delete flash suppressor/ threaded barrel, both of which are "Evil Features" these days. Easiest/cheapest way way is to cut off threaded portion of barrel, and re-crown the barrel.
In the case of proposed, extremely draconian RI firearms laws, you might need to cut-off the "lever"' on the mag release device, and so make the "specified capacity" magazine more-or-less permanently installed. The work-around to this is to install a top-loading device, such as offered by Cogburn Arsenal, and load the (presumably legal) 10-rd mag from the top, like an SKS This actually works, given a good magazine. Tested it myself.
Don't take me wrong; I dislike saying this.
The "Gun-Haters" will never go away, so such mods are merely a reversible modification to comply with existing laws until such laws are revised in the future, hopefully for the better. In the meantime, you might not have to register your firearm, nor risk it being confiscated.
I understand some folks will dislike this approach, and will criticize me.
I look forward to constructive suggestions from such folks. During the last decades, I, and many others here in RI have held out as the only NE State without any sort of AWB.
Instead of personal criticism. Please Pray for our cause. We are doing all we can, and need your help.