13.7” Ballistic Advantage barrel I’m pretty sure on a BCM upper receiver. Pin and welded SOLGW Nox to bring to 16” total. No SBR or pistol brace needed for this upper. Midwest Industries rail, NO CH. Under 500 rounds, has been shot suppressed, runs great. Text 3613893onesixzero. Located in Freer, will meet within reason. Looking for $375, possible trades for 223/556 ammo, 43x or 365xl, optics? Send offers, willing to hear it.