Manufacturer: Advanced Armament Corporation 101716
This upper assembly is all you need to convert your .223 Rem/5.56 NATO AR-15 to 300 AAC Blackout. The 4150 steel barrel features a black nitride finish, including bore and chamber, 1:7" twist for super or sub sonic use. It comes ready for silencer use with a AAC 51-T blackout flash hider and the barrel is threaded 5/8-24.
Specifications and Features:
Advanced Armament Corp AR-15 Complete Upper Assembly
.300 AAC Blackout
16" Black nitride finish barrel
AAC 51-T blackout flash hider, 5/8-24 threads
Flat top upper
Knight's Armament URX II Quad Rail with integral flip up front sight
M4 feed ramps
Compatable with Mil-spec lower recievers
The 16" AAC 300 AAC Blackout upper is designed for use with a carbine receiver extension, standard GI Buffer Spring, and a Carbine Buffer.