Selling a 7.5” AR upper in .556 with quality parts. Parts are as follow •aero precision upper receiver •Ballistic Advantage barrel •Geissele gas block •Geissele mk8 rail •Surefire warcomp •Fail Zero black coated nickel boron bolt carrier group. All ready to throw it on a lower and hit the range, I have a sig red dot for a good price if interested as well. Asking $550 for the upper. Feel free to contact me with any questions.