Scorpion Tactical Laser Engraved Uppers in AAC 300 Blackout and 5.56X45.
Scorpion Tactical Upper Receiver Laser Marked with your favorite CAL. The Upper Receiver, with Extended Feed Ramps, is complete with Dust Cover and Forward Assist. This Scorpion Tactical Upper Receiver is machined and finished to Mil-Spec standards and will fit on any AR15 Style Lower Receiver. Available Marking include AAC 300 BLACKOUT, 5.56MM. Coming soon is 6.8SPC, 7.62X39MM and 9MM.
Material: 7075-T6 Forged Aluminum
Finish:
a. Bead blasted to non reflective matte finish prior to anodize.
b. Mil-A-8625 Type III, Class 2 (Hard Coat Anodize).
c. Nickel Acetate final seal coating (protects against corrosion).
http://mooneysfirearms.com/scorpiontacticalar15strippedupperreceiver.aspx