There aren't many details about the NorthTech Defense stripped uppers. These were announced in March, and release and price point have not been released.

Coming soon! Northtech Defense AR Billet upper receiver. This upper comes standard with Forward assist, or available without Forward assist. This product was designed to be high end, meticulously made, and stylized upper receiver. Thus it is 4 axis CNC machined from a solid piece of aerospace 7075 T6 Billet aluminum. It ends up being a one piece receiver very rigid and lightweight. We have included M4 style feedramp cuts, works great in a semi or full auto platform. We are striving to produce one of the best upper receivers that will work excellent with all mil spec parts. Finish comes standard bead blasted and is matte black anodized.

As a fan of their Lowers, I'm looking forward to these. Stay tuned, or check them out here