Franklin Armory F17-X Upper Receiver Kit 16" .17 WSM

Franklin Armory F17-X Upper Receiver Kit

The Franklin Armory F17-X represents a thoughtful approach to modern varmint and pest control shooting. This complete upper receiver kit arrives ready to install on any Milspec AR-pattern lower receiver, making it an accessible choice for shooters looking to explore the .17 Winchester Super Magnum cartridge.

Key Features

Piston-Driven Performance

• Osprey Defense slim piston system automatically adjusts for both suppressed and unsuppressed fire
• No manual adjustments required—the system handles the transition seamlessly
• Delivers cleaner operation and flatter shooting characteristics compared to direct impingement designs

Barrel and Threading

• 16" barrel threaded at 1/2-28 pitch, the standard for modern suppressors
• 1:9 twist rate optimized for .17 WSM ammunition
• Aura muzzle device included

Ergonomic Design

• 15" proprietary handguard with integrated barrier stop for consistent indexing
• M-Lok compatible for mounting accessories
• Low-profile gas block maintains a clean sight line
• Standard charging handle
• Optic-ready upper—no iron sights, leaving your rail space open for your preferred optic

Caliber Advantage

The .17 Winchester Super Magnum delivers flat trajectory and minimal recoil, making it ideal for precision work on small game and varmints. The piston system's inherent cleanliness means less fouling and easier maintenance—a real advantage during extended shooting sessions.

What's Included

Everything needed for installation on a compatible AR lower receiver. The F17 proprietary bolt carrier ensures reliable feeding and extraction in this specialized caliber.

This is a purpose-built upper receiver for shooters who value efficiency, accuracy, and the unique capabilities of the .17 WSM platform.