Idk if anyone else has had this idea or not. I prefer an extended mag release in all of my pistols (most of the time) and when I bought the LC Carbine I liked the mag release. I bought one for my pistol. The grip is the same so obviously it "should" work. Happy to report that it does indeed fit and work properly and is exactly what I wanted for less than $10.
On shopruger.com:
And before the internet wolves notice and call me out, yes my fiber is missing. The replacement hasn't come in yet.
On shopruger.com:

LC Carbine Magazine Release Lever
shopruger.com
And before the internet wolves notice and call me out, yes my fiber is missing. The replacement hasn't come in yet.