Home / Products / Sons Of Liberty Gun Works / Sons of Liberty Gun Works M4-L89 5.56mm 13.7" Bbl Mid Gas L89 Rail P&W HUXWRX XL Mt Liberty Fighting Bbl & Mil-Spec Upper Receiver U-M4L89-556-137-HUX

Sons of Liberty Gun Works M4-L89 5.56mm 13.7" Bbl Mid Gas L89 Rail P&W HUXWRX XL Mt Liberty Fighting Bbl & Mil-Spec Upper Receiver U-M4L89-556-137-HUX

Sons of Liberty Gun Works M4-L89 5.56mm 13.7" Bbl Mid Gas L89 Rail P&W HUXWRX XL Mt Liberty Fighting Bbl & Mil-Spec Upper Receiver U-M4L89-556-137-HUX

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$1,100

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$1,100

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Mar 27, 2026

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Specifications

Brand

Sons Of Liberty Gun Works

MPN

U-M4L89-556-137-HUX

Description

Sons of Liberty Gun Works M4-L89 5.56mm 13.7" Bbl Mid Gas L89 Rail P&W HUXWRX XL Mt Liberty Fighting Bbl & Mil-Spec Upper Receiver U-M4L89-556-137-HUX

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