I got this idea from "Wilderboy
" of the www.a5ownersgroup.com
but I did this myself.
I've put a sling on my A-5 before and I personally do not like the around the barrel sling not to mention putting all the pressure on the back ring like most vertical slings do. A genuine firearms company named "Uncle Mike's" makes a swivel screw and swivel sling clip which I provided pictures for below.
The screws replace the stock screw at the sight and back site whereas you can attach the swivel clip.
All you need to do this mod is the following:
-"Uncle Mike's" Quick Detachable Swivel Base
(2) $3 each (any gun and ammo store)
-"Uncle Mike's" Quick Detachable Super Swivels 1"
(2) ($7.50 for pack of two at Wal-Mart)
Take a look:
And here is a picture of the "Cards" that came with the items (notice the item number for reference):