Sons of Liberty Gun Works M4-L89 CHF 5.56 NATO Barreled Upper Receiver - Pin and Weld HUXWRX Flash Hider - 13.7"
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Sons of Liberty Gun Works
Overview
The Sons of Liberty Gun Works M4-L89 CHF 5.56 NATO Barreled Upper Receiver is a complete assembly designed for AR-15 builds, featuring a 16-inch barrel with a mid-length gas system that enhances reliability and reduces recoil. The 1:7 twist rate provides excellent stabilization for a wide range of bullet weights, making it a versatile choice for both target shooting and tactical applications. This upper receiver is commonly found in builds aimed at performance and accuracy, appealing to builders looking for a reliable and effective setup.
Specifications
Sons of Liberty Gun Works M4-L89 CHF 5.56 NATO Barreled Upper Receiver - Pin and Weld HUXWRX Flash Hider - 13.7"
Available Merchants(3)
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Build history on GunPartPicker
Builders have been adding the Sons of Liberty Gun Works M4-L89 CHF 5.56 NATO Barreled Upper Receiver - Pin and Weld HUXWRX Flash Hider - 13.7" to their builds on GunPartPicker since February 2026. All time, it ranks #917 of the 1,654 upper receivers builders have added.
It was out of stock everywhere we track for all of September 2026, and today none of the 3 retailers we track has it in stock right now. Listed prices start at $963.86 at Classic Firearms for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
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