Sons of Liberty Gun Works .223 Remington Upper with 13.7" Barrel, Black - EXO3UPPER13.7556
All Sons of Liberty Gun Works upper receivers
Click to see full view
Sons of Liberty Gun Works
Overview
The Sons of Liberty Gun Works .223 Remington Upper features a complete upper assembly with a 13.7" barrel, designed specifically for the AR-15 platform. This upper is chambered in 5.56 NATO, providing versatility for a range of ammunition types and ensuring reliable performance. Builds utilizing this upper are often geared towards compact configurations, making it a popular choice for those seeking a balance between maneuverability and ballistics.
Specifications
Sons of Liberty Gun Works .223 Remington Upper with 13.7" Barrel, Black - EXO3UPPER13.7556
Price and stock
The Sons of Liberty Gun Works .223 Remington Upper with 13.7" Barrel, Black - EXO3UPPER13.7556 was out of stock everywhere we track for all of September 2026, and today none of the 2 retailers we track has it in stock right now. Listed prices start at $807.50 at BattleHawk Armory for when it comes back.
Prices checked · refreshed daily across 37 retailers
Not sure which upper receiver to pick?
We ranked every upper receiver by how often it shows up in real builds on GunPartPicker.
Read the guide: Most Popular AR-15 Upper Receivers →Check it against the live catalog:
Frequently Built With
Popular alongside upper receivers on GunPartPicker
Aero Precision M4E1 Complete Lower Receiver W/MOE SL Grip & SL-S Carbine Stock
Aero Precision AR-15 Breach Charging Handle Ambidextrous Small Levers
Geissele Automatics AR-15 SSA-E X Lightning Bow Trigger
Bravo Company M16 Bolt Carrier Group Black
Magpul AFG-2 Angled Fore Grip - Black
Magpul AR-15 MOE Stock Collapsible Mil-Spec Black
No reviews yet. Be the first to review this product!