Gun swivel studs are used to attach a sling to a gun. Having a long gun equipped with a sling makes carrying it much easier. When walking through the woods, using a sling to carry your gun on your shoulder leaves your hands free to move bushes and branches out of the way. Many guns come equipped with swivel studs, but some do not. Installing swivel studs takes only a few minutes.
Lay a towel on your work surface. This keeps the gun from getting scratched while you work on it.
Check your gun to make sure it is not loaded. While working on your gun, remember gun safety rules. Do not point the barrel at yourself or others.
Mark a spot on the bottom of the stock, centred, two inches in from the butt end.
For the forearm (front end) swivel stud of the gun, you may or may not need to drill a hole. It depends on your swivel stud set. For swivel stud sets that are specific to the gun make and model, the forearm swivel will usually just need to be screwed in place, without drilling, according to package directions. If you do not have a specific kit, make a mark on the stock, two inches back from the forearm of the gun.
Drill two pilot holes using the 1/8-inch bit. Drill the holes where you made your marks in the wood or polymer stock. Drill the hole as deep as the threaded part of the swivel stud.
Put a drop of wood glue in each of the holes. If attaching swivel studs to a polymer stock, put a drop of plastic glue in each of the holes.
Position the swivel studs in each of the holes. Twist them into the holes with your fingers. When they become too hard to turn with your fingers, put the 6d nail through the hole in the swivel stud and use that to turn them.
Turn the swivel studs until they are seated in the gun's stock. Make sure they are positioned so that the hole in the swivel studs point at a 90-degree angle to the stock. Looking down the butt of the gun towards the front, you should not be able to see the swivel stud's holes. Wipe off any excess glue.
Let the glue dry before attaching the sling.