Hey there,
Newbie here brand new to the forum and this is my first post so take it easy on me.
After completing my first AR build, I found this little bag with these two mystery parts inside.
I think they came out of my BCM buffer tube hardware kit, but not 100% sure. They also could have come from my Daniel Defence upper box.
The parts feel like steel and have a black coating on them. One is also slightly longer than the other.
Thought I'd go to the pros for advice. Im not going to fire rifle until I find out where they go.
Any help would be greatly appreciated!
Thanks!

http://i1376.photobucket.com/albums/ah13/traskrider/IMG_0887_zpsef63163b.jpg

Your link is messed up, but those are the locking pieces for a Magpul ASAP sling mount.

Picture Here

Do you have a magpul asap sling endplate? Looks like the little tab that center the endplate to the buffer tub.

Yep, I have that stock.
Thanks a bunch!!