Geiselle AR super dutty blem upper with pinned and welded surefire closed tine flash hider the upper is FACTORY built. Gun has about 500 rounds through it. Includes magpul mbus flip up sighs, bcm bolt, radian raptor charging handle. Lower is a radical firearms lower and has a sprinco blue spring with a bcm h2 buffer, and magpul stock. Id be willing to let go of just the upper for 800