Sons Of Liberty Gun Works M4 EXO3 5.56 NATO Barreled Upper Receiver - 11.5"
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Sons of Liberty Gun Works
Overview
The Sons Of Liberty Gun Works M4 EXO3 Barreled Upper Receiver is a complete assembly designed for the AR-15 platform, featuring an 11.5-inch barrel optimized for 5.56 NATO ammunition. This upper receiver delivers a compact option for builders looking to create a maneuverable firearm while maintaining effective performance in a variety of shooting scenarios. It is commonly found in builds that prioritize 5.56 NATO caliber configurations, often appealing to those seeking a reliable choice for personal defense or tactical applications.
Specifications
Sons Of Liberty Gun Works M4 EXO3 5.56 NATO Barreled Upper Receiver - 11.5"
September 2026 on GunPartPicker
Sons Of Liberty Gun Works M4 EXO3 5.56 NATO Barreled Upper Receiver - 11.5" ranked #267 of the 615 upper receivers builders added on GunPartPicker in September 2026. Builders have been adding it to their builds on GunPartPicker since March 2026. All time, it ranks #644 of the 1,683 upper receivers builders have added.
Today none of the 2 retailers we track has it in stock right now. Listed prices start at $712.50 at Optics Planet for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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Frequently Built With
The part most often added in each category by the builds that include this one
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