Aero Precision .300 AAC Blackout Complete Upper Receiver Assembly w/ 10.5" Rosco Barrel & Geissele MK4 Handguard
This Aero Precision upper receiver assembly is built around a 10.5" Rosco stainless steel .300 AAC Blackout barrel and a Geissele MK4 9.3" M-LOK handguard. It is configured with a Superlative Arms adjustable gas block and a HUXWRX muzzle device.
This build includes a BCM bolt and a Geissele charging handle, along with an Irregular Defense hand brake and a Magpul dust cover.