Aero precision 11.5 upper with atlas R-One

Aero Precision Standard upper
11.5 ballistic advantage Modern series barrel 
5.56
1/2x28 threads
Aero Atlas R-One 10.3” rail
New upper assembled by ray gunworks 
**No BCG, charging handle, or muzzle device included**
Can attach muzzle device if added in cart and note left