"AR15 Complete Upper Build Kit 16"" Barrel W/ 1:8 Twist, 5.56 NATO, 4150 Steel (unassemble) - AR15 handguard, AR15 Complete Upper Build Kit 16"" Barrel W/ 1:8 Twist, 5.56 NATO, 4150 Steel (unassemble) - AR15 handguard, AR 15 handguard USA"
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