Complete Upper Assembly Features

The 17 HMR AR-15 upper features an 18″ barrel, 1:9 twist rate, 1/2-28RH threading, an A2 flash hider, a blowback operating system, two 10 round magazines, and a parts kit for lower conversion.

Complete Upper Assembly Specifications

• Brand: Alexander Arms
• Category: Uppers
• Gun Platform: AR-Style
• Caliber: 17 HMR
• Model: Complete Upper Assembly
• Barrel Length Range: 18″ to 18.99″
• Sights: None, Optic Ready
• Capacity: 10rd
• Firearm Type: AR-15
• Muzzle: A2 Flash Hider
• Firearm Fit: AR-15
• Handguard Finish: Black
• Handguards: M-LOK
• Max Capacity: 10
• Receiver Finish: Black Cerakote
• Receiver Material: Aluminum
• Thread Pattern: 1 / 2″-28 tpi
• Twist: 1:9″
• Weight: 4.50 lbs
• Barrel Finish: Black
• Barrel Length: 18″