Ew, he was referring to M1014's. Those are M3's. An M1014's pump is further back, so it appears to have a longer barrel. It also has an RIS on top of the receiver. Another thing to note is the adjustable stock. There MUCH more aesthetically pleasing than M3's, in my opinion.
But no, I don't know where to find one. If I did, I'd probably buy one though.
Edit: Look at dangerdan's link. If you look at the "included items," it says "quality sling" next to a cheap strip of nylon. I lul'd hard.
I have found "One" an only one. At Dunhams, they have a replica of the M1014 but its made by Firepower. And its $40 more then the one I have linked. All I know is these have been out of stock forever now an Im starting to think I won't be able to get my hands on one. Damn.
Unfortunately for you Double Eagle's (The one that has the molds for the M1014) factory was closed down by the Chinese government. Although, I am sure some other company will get their hands on the molds sooner or later.