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Radical Firearms 5.56 SOCOM AR-15 Barreled Upper - RPR Handguard - 16"
Aero Precision Standard 5.56 NATO AR-15 Barreled Upper Receiver with FDE Handguard - 16"
Geissele Automatics Super Duty 5.56 NATO AR-15 Barreled Upper Receiver - 14.5" - DDC - BLEMULA
Radical Firearms 5.56 AR-15 Barreled Upper Receiver - Slim M-LOK Handguard - BMD Flash Hider - 16"
Aero Precision M4E1 Threaded AR-15 Barreled Upper 5.56 Mid-Length ATLAS R-One - 16"
Geissele Automatics Super Duty 5.56 NATO AR-15 Barreled Upper Receiver - 11.5" - Black - BLEMULA
Aero Precision M4E1-T MOD4 5.56 NATO AR-15 Barreled Upper Receiver - 14.5" - ODG
Aero Precision M4E1-T MOD4 5.56 NATO AR-15 Barreled Upper Receiver - 14.5"
Sons Of Liberty Gun Works M4-EXO3 5.56 AR-15 Barreled Upper Receiver Group - 16"
Sons of Liberty Gun Works East India Starter Kit V2 Combat Grade 5.56 NATO Barreled Upper Receiver - 13.7"
Aero Precision M4E1 Threaded AR-15 Barreled Upper 300 BLK Atlas R-One - 16"
Aero Precision M4E1 Threaded Barreled AR-15 Upper 5.56 Carbine Length ATLAS R-One - 16"
Radical Firearms 5.56 SOCOM AR-15 Barreled Upper - 12" RPR Handguard - 16"
Aero Precision M4E1 Threaded AR-15 Barreled Upper Receiver 5.56 Mid-Length - ATLAS R-ONE - 14.5"
Sons Of Liberty Gun Works M4-EXO3 5.56 NATO AR-15 Barreled Upper Receiver - Pinned NOX - 13.7"
Foxtrot Mike Products MIKE-15 .223 Wylde Gen 2 AR-15 Side Charging Complete Upper Receiver - 13.9"
Sons of Liberty Gun Works M4 L89 CHF 5.56 NATO Barreled Upper Receiver - 13.9" - No Muzzle Device
Radical Firearms 5.56 Barreled AR-15 Upper - 15" RPR Gen 3 Handguard - BMD Brake - 16"
Radical Firearms 5.56 NATO AR-15 Barreled Upper Receiver - 15" M-LOK Skinny Hybrid Rail
Bravo Company Manufacturing 5.56 NATO Enhanced Lightweight Barreled AR-15 Upper - MCMR-13 - 14.5"
Sons of Liberty Gun Works M4-L89 5.56 NATO Barreled Upper Receiver - 16"
Andro Corp 5.56 AR-15 Barreled Upper Receiver - 16"
Radical Firearms 7.62x39mm Barreled AR-15 Upper - 16" - Primary Arms Exclusive
Sons of Liberty Gun Works L89 5.56 NATO Barreled Upper Receiver w/ FCD Plan B Muzzle Device - 14.5" Pin and Weld
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