I've relisted this item due to deadbeat buyer.
I'm selling this 9mm upper that came with my m16. I was told it's an olympic brand upper. I noticed the letters DK on the upper itself so it may be another make, I'm really not sure. The upper comes with the mag block, 2 sten mags, and one lancaster mag as pictured below. It's in excellent shape. I ran a sten mag through it with no problems.
Price is $550 plus shipping for the package. I prefer cash but will entertain trades of MP5 magazines (no asian), a German HK side folding PDW stock (later model HK marked with the cam), or a genuine German PDW barrel.