Just finished this AR build on a Spikes Calico Jack color filled lower and a PWS 14.5 pinned long stroke piston upper in 223 Wylde which can use either 223 or 5.56. Adjustable gas block. Lower has ALG enhance trigger, Phase 5 EBR2 bolt release, Phase 5 winter trigger guard. Magpul MOE grip and Battle Link Minimalist collapsing stock with NRAP Paracord. Extended takedown pins. Custom engraving is from Melville's The Whale (Mody Dick). Also used by Ricardo Montalban in Star Trek Wrath of Kahn. Only 40 rounds down the pipe to function test. Sorry no shipping San Diego only. $1,500.