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Cascades236
03-23-21, 02:06
I removed a standard buffer system and installed a vltor A5 tonight and found this small piece. It appears machined on all sides. It isn't a bolt lug. It's the small piece on the paper towel below the magwell.

https://ibb.co/K61WvC3
mpddoug162
03-23-21, 09:32
Where did you find the piece at? Was it in the vltor box with the other parts or was it just sitting on your work bench after you installed everything like if it fell out of the gun? You ruled out a broken bolt lug and say it’s machined all the way around. I’m assuming that it is then fully finished and has no raw edges. Does the new buffer/ stock require some type of anti rotation key to be installed? What upper-lower combo are you using.
sig1473
03-23-21, 11:11
Looks like a part to the Magpul ASAP plate.
ggammell
03-23-21, 12:12
Looks like a part to the Magpul ASAP plate.

I couldn’t put my finger on the name it but that exactly what I thought too.
TomMcC
03-23-21, 13:10
An alignment key for whatever end plate you're taking off or putting on and your receiver extension.
titsonritz
03-23-21, 13:13
Looks like a part to the Magpul ASAP plate.

Looks like... (https://www.thordsencustoms.com/magpul-asap-plate/.html)
Cascades236
03-23-21, 15:43
The ASAP plate piece is exactly what it is. Thank you! It's been a decade since I installed that thing.