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Aero Precision M4E1 Enhanced Complete Upper Receiver 5.56 NATO 14.5 in Barrel Government Profile 1-7 Twist 12 in M-LOK Handguard Pinned VG6 Epsilon

Aero Precision M4E1 Upper Receiver AR-15 5.56x45mm NATO 7 in M-LOK Handguard No BCG/Charging Handle Magpul Cerakote Flat Dark Earth

Aero Precision Complete Upper Receiver w/Flash Hider M4E1 .300 Barrel EM-9 HG No BCG/Charging Handle Gen 2 FDE Cerakote 10in APAR600222M4

Griffin Armament PSD AR-15 Pistol Complete Upper Receiver 300 AAC Blackout 9.5" Barrel

Griffin Armament RECCE AR-15 Pistol Complete Upper Receiver 223 Remington (Wylde) 16" Barrel

Griffin Armament PSD 9.5 inch 5.56mm

Kaw Valley Precision Carbon Fiber 9mm Complete Barrel Upper Receiver 8.5in Barrel 10.25in CF Handguard XL Linear Compensator Black Medium

Warrior Systems WSM15 Billet Receiver Set 5.56

Foxtrot Mike Products 16" Rear Charging .45 AR-15 Complete Upper

DPMS "Kitty Kat" 7.5" 300AAC 1:7 C7 Carry Handle Upper

DPMS "Kitty Kat" 7.5" 5.56 1:7 C7 Carry Handle Upper

Foxtrot Mike Products VFM-9 5" 9mm Upper

Foxtrot Mike Products Mike-9 7" 9mm Upper

Aero Precision M4E1 Threaded Complete Upper, 7.5" 5.56 Barrel, 7" M-LOK ATLAS S-ONE Handguard - Anodized Black

Aero Precision M5 Complete Upper 22" 6.5 Creedmoor SS Rifle Barrel ATLAS S-ONE 15" M-LOK HG - FDE Cerakote

BCM 5.56 NATO Midlength Barreled Upper - MCMR-15 - 16"

Dirty Bird 16" RECCE V2 .223 Wylde M-LOK Upper Assembly-Blem

Dirty Bird 16" 5.56 NATO Govt M-LOK Upper Assembly V3: Midnight Bronze

Dirty Bird 16" Govt Mid 556 M-LOK Upper Assembly-Blem - Midnight Bronze

Dirty Bird 10.5" Government Carbine 5.56 M-LOK Upper Assembly-Blem - V2, FDE

Aero Precision M5 Complete Upper 22" 6.5 Creedmoor SS Rifle Barrel ATLAS R-ONE 15" M-LOK HG - FDE Cerakote

Dirty Bird 16 Government Midlength 5.56 M-LOK Left-Handed Complete Upper

Aero Precision M4E1 Threaded Complete Upper 12.5" 5.56 BRL 12" M-LOK AR15 ATLAS S-ONE HG - Anodized Black

Dirty Bird 16" 5.56 NATO Govt M-LOK Upper Assembly V3: FDE