Patent ID: 7814695

Claim:
A method of forming a high strength, light weight receiver for a firearm, comprising: forming a metallic receiver body, the receiver body having a top portion, a pair of sidewalls, and a lower portion, wherein a recess is formed at least in the top portion and in the sidewalls, the top portion and the sidewalls at least in part defining a chamber of the receiver, and wherein the top portion of the receiver body is determined with respect to the receiver oriented in an upright firing position; skeletonizing the receiver body to form a plurality of ports at the recess in the receiver body, with the number and size of the ports selected to provide weight reduction while retaining sufficient strength in the receiver to withstand stresses generated upon firing ammunition; and attaching a cover shell to the receiver body so that the cover shell is accommodated within the recess and covers the ports at the recess in the receiver body.