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Radical Firearms 18" .223 Wylde 1:8 S.S. Rifle-Length Barreled Upper - 15" M-LOK RPR Gen3 Rail and BMD Brake
Aero Precision M4E1 Threaded AR-15 Barreled Upper 5.56 Mid-Length ATLAS R-One - 16"
Radical Firearms 5.56 AR-15 Barreled Upper Receiver - Slim M-LOK Handguard - BMD Flash Hider - 16"
Precision Defense™ AR-15 Barreled Upper Receiver - 16"
Radical Firearms 5.56 Barreled AR-15 Upper - 15" RPR Gen 3 Handguard - BMD Brake - 16"
Aero Precision M4E1 Threaded AR-15 Barreled Upper Receiver 5.56 Mid-Length - ATLAS S-ONE - 16"
Foxtrot Mike Products .223 Wylde AR-15 Barreled Upper Receiver - 15" M-LOK Rail with Muzzle Brake - 16"
Aero Precision 5.56 Mid-Length Barreled AR-15 Upper - Pinned FSB - MOE Handguard - 16"
Aero Precision M4E1 Threaded 16" 5.56 M4 Barreled AR-15 Upper Receiver - 15" M-LOK ATLAS S-ONE Handguard
Aero Precision M4E1 10.5" 5.56 NATO Barreled Upper With Gen 2 Enhanced Handguard
Evolve Weapons Systems 5.56 AR-15 Barreled Upper Receiver - M-LOK - 14.5"
Aero Precision M4E1 Threaded Barreled AR-15 Upper .223 Wylde Fluted Mid-Length ATLAS S-ONE - 16"
Evolve Weapon Systems 5.56 AR-15 Barreled Upper Receiver - M-LOK - 16"
Aero Precision M4E1 Threaded Barreled AR-15 Upper 5.56 Rifle Atlas S-One - 18"
Aero Precision M4E1 Threaded Barreled AR-15 Upper 5.56 Carbine Length ATLAS R-One - 16"
Aero Precision M4E1 Threaded AR-15 Barreled Upper Receiver 5.56 Mid-Length - ATLAS R-ONE - 14.5"
Radical Firearms Barreled AR-15 Upper 16" .223 Wylde Mid-Length - 15" M-LOK RPR Gen3 Rail and BMD Brake
Aero Precision 5.56 Mid-Length Barreled AR-15 Upper - Pinned FSB - MOE SL Handguard - 16"
Geissele Automatics Super Duty AR-15 Barreled Upper Receiver 5.56 Mid-Length - Black - No Muzzle Device - 14.5"
LMT Barreled AR-15 Flat Top Upper - 10.5"
Sons Of Liberty Gun Works M4-89 5.56 NATO Barreled Upper Receiver Group - 10.5"
Radical Firearms 5.56 SOCOM AR-15 Barreled Upper - RPR Handguard - 16"
Sons of Liberty Gun Works M4-89 MATCH AR-15 Barreled Upper - 6mm ARC - 14.5"
Sons Of Liberty Gun Works M4 EXO3 5.56 NATO Barreled Upper Receiver - 11.5"
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