Faxon FX-5500 Ion Ultra Light 5.56 NATO Rifle - 16" Barrel

The Faxon FX-5500 Ion Ultra Light delivers precision shooting performance in a lightweight platform engineered for competitive shooters and tactical professionals. This 5.56 NATO rifle combines advanced metallurgy with streamlined design to reduce carry weight without compromising accuracy or reliability. Built around Faxon's proven barrel technology, the FX-5500 maintains consistent sub-MOA performance across extended firing sessions.

What Makes This Different

The Ion Ultra Light construction utilizes aerospace-grade aluminum and strategic material removal to achieve a significantly lighter weight profile than standard AR-15 platforms. Faxon's proprietary barrel manufacturing process ensures consistent bore dimensions and chamber specifications that exceed SAAMI standards. The integrated gas system provides reliable cycling with both commercial and military ammunition loads, while the precision-machined upper and lower receivers maintain tight tolerances for enhanced accuracy.

Key Features

• 16-inch button-rifled 4150 steel barrel with 1:8 twist rate for optimal bullet stabilization
• Ultra-lightweight aluminum construction reduces overall rifle weight by 12-15%
• Mid-length gas system with adjustable gas block for reliable cycling
• Mil-spec trigger group with 6-7 pound pull weight
• Magpul MOE stock and grip for improved ergonomics and control
• 15-inch M-LOK handguard with full-length top rail for optics mounting
• Standard AR-15 magazine compatibility accepting STANAG 30-round magazines

Field testing demonstrates consistent 1.5 MOA accuracy with match-grade ammunition and reliable function in temperatures ranging from -20°F to 140°F. The rifle cycles reliably with ammunition weights from 55 to 77 grains, making it suitable for competitive shooting, patrol duty, and precision applications. The corrosion-resistant finish withstands harsh environmental conditions while maintaining zero retention through repeated temperature cycles.

Technical Specs

• Caliber: 5.56 NATO/.223 Remington
• Barrel Length: 16 inches with 1:8 twist rate
• Overall Length: 32.5 inches (stock collapsed), 35.75 inches (extended)
• Weight: 6.2 pounds unloaded
• Gas System: Mid-length with low-profile adjustable gas block
• Handguard: 15-inch M-LOK compatible aluminum
• Finish: Type III hard anodized aluminum, nitride barrel coating
• Magazine Capacity: 30 rounds (state laws permitting)
• Manufactured in the United States with lifetime warranty

The FX-5500 Ion Ultra Light represents the intersection of weight reduction and performance optimization in modern rifle design. Professional shooters choose this platform when ounces matter and accuracy cannot be compromised.