Very nice mix of parts, shoots extremely well now (see paragraph at the bottom). Only about 3 magazines/90 rounds through it.
Lower receiver: Geissele ODG blem lower, SOLGW Blaster Guts lower parts kit, American Defense Manufacturing 8-position buffer tube, H1 buffer, ERGO rubberized fde grip, B5 Systems coyote brown Bravo stock, Forward Controls Design trigger guard, and BCM PNT trigger.
Upper receiver: BCM M4 upper receiver, Larue SAR 10" handguard, Criterion Core Series 14.5" chrome lined barrel (8" twist, 223 Wylde chamber) with pinned & welded Lantac Dragon ASR mount, Microbest chrome bolt carrier, BCM bolt, and Radian Raptor-SD fde charging handle.
Optics: I'm selling just the rifle, but if you really want the optics, they'll be an additional $900. It's a Sig Romeo 4T-PRO with an Aimpoint 3x-c magnifier on an ADM swivel mount.
$1,200 for the rifle without the optics, not really interested in trades at this time.
((Honest comment on the barrel. When I first shot it, it was extremely horrible, maybe 6 or 8 moa, which was unexpected from a very highly reputed barrel manufacturer. I sent it back to them, and their solution was to sell me a matched headspace BCM bolt for it. It now shoots any random bulk ammo at about 0.6-moa when used with the factory-headspaced bolt.))