You say made from mostly all J&T parts, was it our kit or not? Most importantly was it purchased directly from us or from someone who said it was ours?
Did you happen to notice how the hammer was marked? If it was our's it will be marked with a M encompassed by a circle.
We don't offer any blue light specials, unless you consider the companies that make parts for Colt, FN, BM, Armalite, and DPMS "K-Mart".
If your friend is having a problem with items purchased from us then have him give me a call and I'll get replacement parts sent out for him immediately. We stand behind our products completely, and should there be a mistake (as we all have and will make them upon occasion) then we will take care of the problem promptly.