SOLGW M4-89 13.7" 5.56 URG
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Aug 26, 2026
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Sons of Liberty Gun Works M4-89 Complete Upper, 223 Remington/556NATO, 13.7" Pinned (16" OAL) Combat Barrel, QPQ Finish, Black, 13" M89 M-LOK Handguard, P/W NOX Flash Hider M489UPPER-13.7-556
