Aero Precision M4E1 AR15 .223 Wylde 18 inch SS QPQ M-LOK Upper Receiver Rifle Length 1-8 Twist 1/2×28 A2 Flash Hider Anodized Black

Aero Precision M4E1 AR15 .223 Wylde 18 inch SS QPQ M-LOK Upper Receiver Rifle Length 1-8 Twist 1/2×28 A2 Flash Hider Anodized Black. 223 Wylde Complete Upper Receiver is a one-piece free float design with built-in anti-rotation tabs. These upper receivers AR15 Upper Receivers take almost no time to build onto your AR15. You’ll be at the range shooting in no time when you add the Aero Precision M4E1 .223 Wylde Complete Upper Receiver to your AR15. Specifications for Aero Precision M4E1 18in .223 Wylde Complete Upper Receiver with Flash Hider: Manufacturer: Aero Precision Caliber: .223 Wylde Barrel Length: 18 in Barrel Profile: SPR Gas System Length: Rifle Length Barrel Twist Rate: 1-8 Firearms Threads Per Inch: 1/2×28 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: 15 in Handguard Style: M-LOK w/ Top Picatinny Rail System Gun Rail: M-LOK Gun Type: Rifle Gun Make: AR Platform Barrel Material: 416R Stainless Steel Weight: 68.5 oz Magazine Included: No Condition: New Threads per Inch: 1/2×28 Country of Origin: USA Features of Aero Precision M4E1 18in .223 Wylde Complete Upper Receiver with Flash Hider: M4 Feed Ramp Extension Laser engraved T-marks (Anodized only) Comes assembled with port door and forward assist installed Accepts standard AR15/M16 components Handguard mounting platform is forged into the receiver Works with Aero Precision handguards but also fits most BAR-system handguards Built in anti-rotation tabs Scalloped rails Continuous top rail 1.78″ inside diameter fits most muzzle devices and 1.5″ suppressors Compatible with low profile gas blocks HP and MPI tested Package Contents: Aero Precision M4E1 18in .223 Wylde Complete Upper Receiver with Flash Hider Barrel Nut Wrench Gen 2 Enhanced Handguard What firearm models does the manufacturer say Aero Precision M4E1 18in .223 Wylde Complete Upper Receiver with Flash Hider is compatible with? The manufacturer suggests that Aero Precision M4E1 18in .223 Wylde Complete Upper Receiver with Flash Hider is compatible with AR-15Aero Precision APAR600251M73: M4E1 Complete Upper .223 Wylde 18in Rifle Length 1/8 EM-15 Gen2 A2 Anodize Black