Aero Precision Aero Precision AR15/EPC ATLAS Barrel Nut This lightweight replacement ATLAS Barrel Nut works with both AR15/EPC ATLAS R-ONE and S-ONE handguards. Fits Aero Precisions threaded upper receivers ONLY (not the M4E1 or EPC enhanced upper receivers). Retail: $35.00 Was: Now: $31.99 Add to Cart
