I have 850 M13 links that came from when I bought a couple cans of .308 ammo that was linked. I have an M1A, so I took the links off and put them in a bag. Some have different markings, some have the nato circle cross, some say RG75. Anyhow, they are all in great shape and have no rust on them. 850 links for $15 to your door (because of the high shipping) or if you happen to come by south east IL I will sell them FTF for $8.00. Now SPF Thanks!