Aero Precision M4E1-T 6.5 Grendel 18" Complete Upper with ATLAS S-ONE Handguard

Aero Precision Complete Upper M4E1-T 6.5 Grendel 18in 6.5 Grendel Rifle Length 1/8 Twist 5/8x24 Thread Stainless Steel w/ ATLAS S-ONE Handguard Black. 5 Grendel Complete Upper Receiver. Designed to be a low recoil/high accuracy cartridge the 6.5 Grendel is ideal for those looking to stretch the legs of their AR15 rifle with proven results at 1000+ yards. The 6.5 Grendel is designed on the AR15 platform. You will need to purchase a 6.5 Grendel specific bolt carrier group (available now) and magazine (not currently offered - coming soon). All other components are standard to the AR15 platform. This upper assembly does not include a BCG or Charging Handle. Specifications for Aero Precision M4E1-T 18in 6.5 Grendel Complete Upper with Flash Hider w/ ATLAS S-ONE Handguard: Manufacturer: Aero Precision Caliber: 6.5mm Grendel Barrel Length: 18 in Barrel Profile: SPR Gas System Length: Rifle Length Barrel Twist Rate: 1-8 Firearms Threads Per Inch: 5/8x24 Handguard Type: Free-Float Muzzle Device: A2 Flash Hider Finish: Stainless Color: Black Gun Model: AR-15 M4 Fabric/Material: 7075-T6 Aluminum Gas Block Journal Size-Diameter: .075 in Handguard Length: 15 in Handguard Style: Hybrid Rail Gun Rail: Picatinny Gun Make: Aero Precision Barrel Material: 416R Stainless Steel Weight: 68.5 oz 7 lb Bolt Carrier Group Included: No Charging Handle Included: No Magazine Included: No Condition: New Included Accessories: None Mount Type: M-LOK Country of Origin: USA Features of Aero Precision M4E1-T 18in 6.5 Grendel Complete Upper with Flash Hider w/ ATLAS S-ONE Handguard Product Comes assembled Package Contents: Aero Precision M4E1-T 18in 6.5 Grendel Complete Upper with Flash Hider w/ ATLAS S-ONE Handguard M4E1 Threaded Assembled Upper Receiver ATLAS S-ONE Handguard of Choice 6.5 Grendel 18in Stainless Steel Rifle Length Barrel .750 Low Profile Gas Block Rifle Length Gas Tube A2-style Flash Hider What firearm models does the manufacturer say Aero Precision M4E1-T 18in 6.5 Grendel Complete Upper with Flash Hider w/ ATLAS S-ONE Handguard is compatible with? The manufacturer suggests that Aero Precision M4E1-T 18in 6.5 Grendel Complete Upper with Flash Hider w/ ATLAS S-ONE Handguard is compatible with AR-15 M4Aero Precision APAR700325M52: Complete Upper M4E1-T 6.5 Grendel 18in 6.5 Grendel Rifle Length 1/8 Twist 5/8x24 Thread Stainless Steel w/ ATLAS S-ONE Handguard Black