Faxon Firearms ION Ultralight 16" 5.56 Barrel Complete Upper Receiver - FX5500-U

FX5500-U features our 14.5″ Pencil Barrel with Integral Slim 3-Port Muzzle Brake which meets the NFA 16″ minimum barrel length requirement, 13” Streamline Carbon Fiber Handguard, and Lightweight Bolt Carrier Group. Super light, easy shooting and ultra-rugged, the FX5500-U never compromises strength for weight.

Pop two pins and shave more than 1 lb off the weight of your AR15!*

Upper Receiver:

• 5.56 NATO Pencil Barrel w/ Integral 3-Port Brake – meets NFA 16″ minimum barrel length requirement
• Faxon Enhanced Forged Upper Receiver
• Faxon 13″ Carbon Fiber M-LOK Handguard
• Faxon Gunner Lightweight Bolt Carrier Group
• Multi-Position Adjustable Gas Block
• Enhanced Ambi Charging Handle
• Weight. 3.1 lbs