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Aero Precision M4E1 Threaded Complete Upper, 14.5" 5.56 Mid-Length Barrel with Pinned Gamma 556 SL, 12" M-LOK
Aero Precision M4E1 Threaded 14.5" 5.56 Carbine Length Complete Upper Receiver with 12" ATLAS R-ONE Handguard
Ballistic Advantage Modern Series 14.7" Pencil Profile 5.56x45mm Mid-Length Barrel - BABL556012M
Aero Precision M4E1 Enhanced Complete Upper, 16" 5.56 HBAR MID-Length Barrel with 15" Enhanced Quad Rail Handg
Ballistic Advantage Modern Series AR-15 20" 5.56x45mm, Government Profile Barrel - BABL556026M
Aero Precision M4E1 Enhanced 14.5" 5.56 M4 Carbine Length Barrel Complete Upper Receiver - Anodized Black - APAR640
Aero Precision M4E1 Thread 8" 5.56 Complete Upper Receiver with ATLAS S-ONE Handguard - Cerakote FDE - APAR700111M1
Aero Precision M4E1 Threaded 16" 5.56x45mm Mid-Length Complete Upper Receiver with ATALS R-ONE Handguard - Kodiak B
Aero Precision M4E1 Threaded 16" 5.56x45mm Mid-Length Complete Upper Receiver with ATLAS S-ONE Handguard - OD Green
Aero Precision M4E1 Threaded 16" 5.56x45mm Mid-Length Complete Upper Receiver with ATALS S-ONE Handguard - Kodiak B
Aero Precision M4E1 Threaded 16" 5.56x45mm Mid-Length Complete Upper Receiver with ATLAS R-ONE Handguard - OD Green
Aero Precision 14.5" 5.56 CMV Barrel, Mid-Length with Pinned Epsilon 556SL - APRH101597C