A5 mcmillan stock swing swivel stud drilling question

[Alcatraz]

I recently purchased a Mcmillan A5 Stock and for got to get two extra sling swivels for it. My friend was saying how I could get a kit for it, but I wanted to make sure there wasn't something I was going to mess up in the stock from me drilling in to it. Does anyone know if it would be ok for me to drill into the stock , In the back stock, and in the front about two, three inches from the front?

 

[Dick D]

Putting a stud into the forearm is no big deal. Drill the hole thru from the bottom. At your local hardware store get some 10x32 flanged T-Nuts. They have a round flange on the top about 5/8" in diameter with three little prongs bent down from it. Counter sink these into the stock from the barrel channel side to where they set below the bottom of the barrel channel and seat them in a bed of bedding material or thick glue. Screw the machine screw stud into them from the bottom.
The butt stock is a different story. The fiberglass shell is about 1/10" thick and the filler behind it is some white chalk type material. If you screw a wood screw stud into it the stud will eventually pull out. When you order a rear sling stud as the stock is being made we install a 1" long stainless steel backing plate with a 10x32 hole in it inside the buttstock before it is filled, and the stud screws into this stainless backing plate. To do a proper job on a rear stud you need to take the recoil pad off, which is glued on or the whole spacer system off it, including the backing plate which is also glued on. Drill about a 1/2" diameter hole into the buttstock right on top of the shell about 2" into the stock. Get a piece of 1/2" by 1/8" or 3/8" x 1/8" steel flat bar about 1.5" long and insert it into the stock. Fill the hole full of catalyzed epoxy and let it set up. Then install a new recoil pad and grind to fit or re-install the base plate of the spacer system if you got if off in one piece. Then drill a proper size hole down into the steel backing plate and tap it for 10x32 threads. Screw a machine screw stud into this plate and you have a good installation that will not pull out. If you ever break the rear stud off just drill and tap a new hole about 1/4" away from the first one.