Mil-Spec 7075-T6 Aluminum Forging Machined To Mil Spec Dimensions, Front Magazine Well Finger Grips, Nib-X Nickel Boron Coated For Durability UPPER RECEIVER: Mil-Spec 7075-T6 Aluminum Forging With M4 Feed Ramps. Nib-X Coated For Lubricity And Durability Made in USA!
