Sons of Liberty Gun Works M4-L89 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-L89 is a complete barreled upper receiver designed for the AR-15 platform, featuring an 11.5-inch barrel chambered in 5.56 NATO. This configuration strikes a balance between maneuverability and performance, making it ideal for close-quarters engagements while maintaining effective range for tactical applications. You will commonly find this upper receiver in builds focused on 5.56 NATO caliber, catering to shooters who prioritize compact setups without sacrificing firepower.
Specifications
Sons of Liberty Gun Works M4-L89 5.56 NATO Barreled Upper Receiver - 11.5"
Available Merchants(1)
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Stock Alert
September 2026 on GunPartPicker
Sons of Liberty Gun Works M4-L89 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 February 2026. All time, it ranks #963 of the 1,714 upper receivers builders have added.
Today the one retailer we track is out of stock. Listed prices start at $855 at BattleHawk Armory for when it comes back.
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