Well christmas finally finished my ar. I ordered my core15 upper just before christmas and got a few parts on my days off around christmas and new years. Finished everything up last week or so. Got the core15 upper while it was still 439 and free shipping. Seems to be a smoking deal. 1/8 twist 16" low pro gas block and MI 9" rail. Everything looked great out of box fits great on the spikes lower good staking and the billet charging handle hey offer is included. Only thing I noticed is it was very dry out of box. I believe they do use a dry lube in the upper but I still don't think I have ever seen one that dry out of box from other manufacturers? Lower is a spikes blemish lower and I can't find it lol. No clue who made parts kit as I had it around already.
Took it out the other day and ran about 60rds through it real quick ran some wolf 223 (oh no). All worked perfect no feed or eject issues. Nice pile of brass at about the 4-430 position. Running spikes t2 buffer.
Spikes lower
ergo grip
core15 16" upper
MI gen 2 rail
primary arms red dot
Cheap stock from aim
magpul trigger guard
magpul rvg
I just had a afg show up today going to try it out next.