Flat top M4 chrome lined barrel upper. 16" barrel with faux flash suppressor that makes it appear as a 14.5" barrel with a flash suppressor. Post-ban legal. Colt M4 double heat shield guards. Everything is tight on this, no wobbly improper fit.
Assembled by Legal Transfers. 250 rounds through it. Complete with bolt group, charge handle.
$460 + ship. Tested and works flawlessly. Add ARMS #40 for $80.
Cross posted from DPMS/RRA Carbine Package in the complete rifles/lower forum.