Alexander Arms AR-15 .17 HMR 18″ Complete Upper Receiver – Stainless Steel Fluted Barrel with Conversion Kit

The Alexander Arms AR-15 .17 HMR 18-inch Complete Upper Receiver is designed to bring the flat-shooting performance of the .17 HMR cartridge to the AR-15 platform. Engineered for precision and reliability, this upper assembly allows shooters to convert a standard AR-15 lower into a high-velocity rimfire rifle ideal for varmint hunting, target shooting, and recreational range use.

Featuring an 18-inch stainless steel fluted barrel, this upper delivers excellent accuracy and improved heat dissipation while reducing overall barrel weight. The fluted design also enhances rigidity and helps maintain consistent performance during extended shooting sessions. The .17 HMR cartridge is known for its extremely high velocity and flat trajectory, making it well suited for small game and varmint applications.

This upper includes the necessary conversion components for proper .17 HMR operation on the AR platform, providing shooters with a complete solution for rimfire performance without the cost of centerfire ammunition.

Quick Highlights:
• Complete AR-15 upper receiver chambered in .17 HMR
• 18-inch stainless steel fluted barrel for accuracy and heat management
• Designed to convert standard AR-15 lowers to .17 HMR
• High-velocity rimfire performance with flat trajectory
• Ideal for varmint hunting and precision rimfire shooting
• Durable construction with precision machining

Use Cases & Applications:
• Varmint and small game hunting
• Precision rimfire target shooting
• Low-recoil training and practice
• AR-15 rimfire conversion builds
• Recreational range shooting

Technical Details:
• Manufacturer: Alexander Arms
• Platform Compatibility: AR-15
• Product Type: Complete Upper Receiver with Conversion Kit
• Caliber: .17 HMR
• Barrel Length: 18 Inches
• Barrel Material: Stainless Steel
• Barrel Design: Fluted
• Finish: Stainless Steel
• Included Components: Complete Upper Receiver and Conversion Kit