Spikes SFT50M4 Flat Top Stripped Upper Multi-Caliber 7075-T6 Aluminum Black Anodized Receiver for M4 Platform $103.50
Sons Of Liberty Gun Works UPPERSTRIPPED M4 Stripped Upper Receiver Black Anodized Aluminum, Fits Mil-Spec AR-15 $142.50
Aero Precision APAR700201C M4E1 Threaded Receiver 5.56x45mm NATO 7075-T6 Aluminum Black Anodized Receiver for AR-15 $134.99
TacFire BU-556-7 Pistol Upper Assembly 5.56x45mm NATO Caliber with 7" Black Nitride Barrel, Black Anodized 7075-T6 Aluminum Receiver & M-LOK Handguard for AR-Platform Includes Bolt Carrier Group $289.09
TacFire BU-556-10 Pistol Upper Assembly 5.56x45mm NATO Caliber with 10" Black Nitride Barrel, Black Anodized 7075-T6 Aluminum Receiver & M-LOK Handguard for AR-Platform Includes Bolt Carrier Group $301.40
TacFire BU9MM4 Pistol Upper Assembly 9mm Luger 4" Black Nitride Barrel 7075-T6 Aluminum Black Anodized Receiver M-LOK Handguard for AR-Platform $232.51
Aero Precision APAR611310AC Assembled XL Receiver 7075-T6 Aluminum Black Anodized Receiver for AR-15 $134.99
Adams Arms FGAA01366 P3 300 Blackout 12.50" Black Nitride Barrel, Aluminum Black Receiver, AARS M-LOK Handguard for AR-Platform $1,689.00
Aero Precision APAR600201AC M4E1 Enhanced Receiver 5.56x45mm NATO 7075-T6 Aluminum Black Anodized Receiver for AR-15 $199.99
Aim Sports AR5CUB5 Complete Build Kit 5.56x45mm NATO 16" Aluminum Black Hard Coat Anodized Receiver for AR-15 $348.55
TacFire BU-9MM-10 Pistol Upper Assembly 9mm Luger Caliber with 10" Black Nitride Barrel, Black Anodized 7075-T6 Aluminum Receiver & M-LOK Handguard for AR-Platform Includes Bolt Carrier Group $244.82
TacFire BU-556-5 Pistol Upper Assembly 5.56x45mm NATO Caliber with 5" Black Nitride Barrel, Black Anodized 7075-T6 Aluminum Receiver & M-LOK Handguard for AR-Platform Includes Bolt Carry Group $289.09
TacFire BU-300-10 Pistol Upper Assembly 300 Blackout Caliber with 10" Black Nitride Barrel, Black Anodized 7075-T6 Aluminum Receiver & M-LOK Handguard for AR-Platform Includes Bolt Carrier Group $301.40
Aim Sports AR5CUB3 Complete Upper Assembly 5.56x45mm NATO 16" Black Nitride Barrel 7075-T6 Aluminum Black Hard Coat Anodized Receiver 15" M-LOK Free-Float Handguard for AR-15 $302.08
CMMG 55BB40BAB Resolute MK4 5.56x45mm NATO 16.10", Armor Black, M-LOK Free-Float Handguard for AR-Platform (No BCG or Charging Handle) $439.89