Aero Precision M4E1-E AR15 5.56mm 8in M-LOK Upper Receiver Heavy Pistol Length 1-7 Twist 1/2x28 A2 Flash Hider 7.3in EM Handguard Anodized Black

Aero Precision M4E1-E AR15 5.56mm 8in M-LOK Upper Receiver Heavy Pistol Length 1-7 Twist 1/2x28 A2 Flash Hider 7.3in EM Handguard Anodized Black. Specifications for Aero Precision M4E1-E 8in 5.56 Complete Upper with Flash Hider: Manufacturer: Aero Precision Caliber: 5.56mm Barrel Length: 8 in Barrel Profile: DRP Gas System Length: Pistol Length Barrel Twist Rate: 1-7 Firearms Threads Per Inch: 1/2x28 Handguard Type: Free-Float Muzzle Device: A2 Flash Hider Gun Model: AR-15 Fabric/Material: 7075-T6 Aluminum Gas Block Journal Size-Diameter: .750 in Handguard Length: 7.3 in Handguard Style: M-LOK w/ Top Picatinny Rail System Gun Rail: M-LOK Gun Type: Rifle Gun Make: AR Platform Aero Precision Barrel Material: 416R Stainless Steel Weight: 4 lb Bolt Carrier Group Included: No Charging Handle Included: No Magazine Included: No Condition: New Country of Origin: USA Package Contents: Aero Precision M4E1-E 8in 5.56 Complete Upper with Flash Hider What firearm models does the manufacturer say Aero Precision M4E1-E 8in 5.56 Complete Upper with Flash Hider is compatible with? The manufacturer says that Aero Precision M4E1-E 8in 5.56 Complete Upper with Flash Hider is compatible with AR-15Aero Precision APAR640269M102: Complete Upper M4E1-E 5.56 8in Pistol Barrel EM7.3 Anodized Black