DealIncludes: Complete Aero Precision AR-15 M4 Upper Receiver with dust cover and forward assist. Aero Precision 15" Quantum Handguard - M-LOK. Handguard barrel nut & mounting screws. Removable 4-slot picatinny rail section. from Ground Zero Precision (Product Aero-Precision-Quantum-Upper-Set-15-MLOK) |