5.56 Nato

AR-15 5.56 Nato 8.5″ Pistol Upper Complete Build Kits (Assembled Black Barrel Upper) – Purple

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AR-15 5.56 Nato 8.5″ Pistol Upper Complete Build Kits (Assembled Black Barrel Upper) – Orange

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AR-15 5.56 Nato 8.5″ Pistol Upper Complete Build Kits (Assembled Black Barrel Upper) – Blue

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AR-15 5.56 Nato 8.5" Pistol Upper Complete Build Kits (Assembled Black Barrel Upper) - Black

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AR-15 5.56 Nato 7.5″ Pistol Upper Complete Build Kits (Assembled Black Barrel Upper) – Purple

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AR-15 5.56 Nato 7.5″ Pistol Upper Complete Build Kits (Assembled Black Barrel Upper) – Orange

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AR-15 5.56 Nato 7.5″ Pistol Upper Complete Build Kits (Assembled Black Barrel Upper) – Blue

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AR-15 5.56 Nato 7.5″ Pistol Upper Complete Build Kits (Assembled Black Barrel Upper) – Black

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AR-15 5.56 Nato 20″ Rifle Upper Complete Build Kits (Assembled Black Heavy Barrel Upper) – Orange

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AR-15 5.56 Nato 20" Rifle Upper Complete Build Kits (Assembled Black Heavy Barrel Upper) - Black

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AR-15 5.56 Nato 20″ Rifle Upper 17″ Rail Complete Build Kits (Assembled Black Heavy Barrel Upper)

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AR-15 5.56 Nato 16″ Rifle Upper Complete Build Kits (Assembled Black Barrel Upper) – Blue

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