Sons of Liberty Gun Works x Expo Arms M89 5.56 NATO Barreled Upper Receiver - 13.7"

Sons of Liberty Gun Works M4-L89 5.56x45mm 11.50"

Sons of Liberty Gun Works L89 V2 5.56 11.50" Upper 5.56x45mm M-LOK Rail, Black

Sons of Liberty Gun Works M4-L89 5.56x45mm 13.70"

Sons of Liberty Gun Works M4-L89 14.50" Upper 5.56x45mm, Black

Sons of Liberty Gun Works M4-L89 14.50" Upper 5.56x45mm, Black

Sons of Liberty Gun Works Half Complete Upper Receiver M4-89 5.56mm 11.5in 10.5in Combat Barrel M89 Rail A2 Flash Hider No BCG or CH Black

Sons of Liberty Gun Works L89 Complete Upper Half 10.5in 5.56 Cold Hammer Forged Barrel 9.75in L89 Rail A2 No BCG or CH Black