Aero Precision AR15 Complete Upper 16" Carbine 5.56 M4 with FSB and Handguard, Black - APAR505621

This AR15 complete barreled upper receiver features a 16" 5.56 CMV carbine length barrel with pinned front sight base, M4 style handguard, and carbine length gas system. The upper comes assembled with a standard A2 flash hider and is constructed from steel and aluminum materials. Compatible with standard AR-15 lower receivers.