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5.56x45 Upper Receivers

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Aero Precision M4E1 Threaded 16" 5.56 Pencil Complete Upper Receiver with ATLAS R-ONE Handguard - Anodized Black - APAR700705M39
Out of Stock
Aero Precision AR15 Left Handed 14.5" 5.56 Carbine-Length M4 QPQ Complete Upper with 13.5" Slimline Handguard - Anodized - APSL100711
Out of Stock
Aero Precision M4E1 Threaded Complete Upper, 12.5" 5.56 Carbine Length Barrel with 10.3" ATLAS R-ONE M-LOK Handguard - Anodized Black - APAR700703M30
Out of Stock
Aero Precision M4E1 Threaded 16" 5.56x45mm Mid-Length Complete Upper Receiver with ATALS S-ONE Handguard - OD Green Anodized - APAR700179M7
Out of Stock
Aero Precision Threaded Complete Upper, 16" 5.56 HBAR Mid-Length Barrel with 15" ATLAS S-ONE M-LOK Handguard - FDE Cerakote - APAR700115M97
Out of Stock
Aero Precision AR15 Complete Upper, 16" 5.56 Carbine Barrel with Pinned FSB, M4 Handguard - Anodized Black - APAR505621
Out of Stock
Aero Precision M4E1 Threaded Complete Upper, 13.9" 5.56x45mm CMV Mid-Length Barrel with 12.7" ATLAS R-ONE M-LOK Handguard - Cerakote FDE - APAR700714M99
Out of Stock
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