What is the fine-grained topic of the following text: Especially in “Forging” and full CNC milling Receiver, full CNC milling FF-RAS handguard, Full CNC milling realsize charging handle, AL CNC bolt carrier, Mil-spec hardened anodized surface finishing and full of steel parts, all manufacturing processes as realistic as possible. Only return the topic.
CNC Milling in Firearms Manufacturing