12.7 mm gun assembly group and bolt carrier body.
Covers the carrier and moving parts of the 12.7 mm heavy machine gun group. The bolt carrier body holds the parts that chamber the round and eject the case after firing, while the gun assembly group forms the connection between the barrel and the receiver.
In heavy calibre, the energy released with each shot is far higher; parts must withstand both impact and heat. Hardness is measured after heat treatment and surface hardening, then the dimensions of moving surfaces undergo full inspection.
| Calibre | 12.7 mm |
|---|---|
| Scope | Gun assembly group, bolt carrier |
| Process | Heat treatment + surface hardening |
| Inspection | Hardness measurement and full dimensional inspection |
