Aero Precision M4E1 Complete Upper Receiver 5.56 Mid Barrel EM-12 HG No BCG/Charging Handle Anodized Black 14.5in APAR600231M5. 5″ 5.56 Mid-Length Barrel EM-12 Gen 2 Handguard – Anodized Black Specifications for Aero Precision M4E1 Complete Upper Receiver 5.56 Mid Barrel EM-12 HG: Manufacturer: Aero Precision Color: Black Finish: Anodized Caliber: 5.56x45mm NATO Gun Model: M4 Condition: New Country of Origin: USA Package Contents: Aero Precision M4E1 Complete Upper Receiver 5.56 Mid Barrel EM-12 HG What firearm models does the manufacturer say Aero Precision M4E1 Complete Upper Receiver 5.56 Mid Barrel EM-12 HG is compatible with? The manufacturer says that Aero Precision M4E1 Complete Upper Receiver 5.56 Mid Barrel EM-12 HG is compatible with M4Aero Precision APAR600231M5: M4E1 Complete Upper Receiver 5.56 Mid Barrel EM-12 HG No BCG/Charging Handle Anodized Black 14.5in
XTS Complete Upper Receiver w/o BCG AR-15 300 BO 19.5in 10.5in Pistol 1-8 Twist 5/8x24 Thread M-LOK Bird Cage Black Nitride Finish Red Original price was: $339.99.$299.99Current price is: $299.99. 
XTS Complete Upper Receiver w/o BCG AR-15 300 BO 19.5in 10.5in Pistol 1-8 Twist 5/8x24 Thread M-LOK Bird Cage Black Nitride Finish Purple Original price was: $339.99.$299.99Current price is: $299.99. Aero Precision M4E1 Complete Upper Receiver 5.56 Mid Barrel EM-12 HG No BCG/Charging Handle Anodized Black 14.5in APAR600231M5
Original price was: $640.00.$529.99Current price is: $529.99.