Seen a couple of range trips and a couple of hunting trips. Could of hundred rounds at the most. Could almost pass for new. Includes rifle buffer, buffer tube, and buffer spring. Buffer spring is actually new as I replaced it when I got the kit with a Wolff Extra power spring. I also installed a Magpul QD socket. More info can be found here: http://www.brownells.com/rifle-parts/stock-parts/buttstocks/ar-15-m16-moe-rifle-stock-kits-prod54977.aspx
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