Yes that's what I was told it was, an RIC, but it's had the barrel turned down and some parts are missing, so I doubt it's worth much money.
I want to make a hunting rifle out of it. It's super light so it would be a joy to hunt with.
The man that gave it to me told me it was an Irish Constabulary carbine. I can't really say, but he's very knowledgeable about SMLEs. So I believe him.
I did try a #1 Mk 3 mag in it and it won't fit. It's too wide. I am not really sure what i have, but it's not worth it to me to spend time making a nice "speed clone" if I can't get a magazine.
I'll try to post pics soon.
Any help is appreciated.