| Term |
Definition |
| Gauge |
A system of measurement for the internal bore diameter of a smooth-bore firearm based on the diameter of each of that number of spherical lead balls whose total weight equals one pound. |
| Grains |
A unit of weight (mass actually) used for measuring bullets and gunpowder. |
| Grip |
The portion of the stock or pistol where you grasp the gun with your dominate or trigger hand. |
| Grooves |
The cuts made in the bore of a firearm to produce rifling. |