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Republic Firearms 16" M4 Flat Top Complete Upper, with 1:8 twist Nitride barrel.
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Republic Firearms 16" M4 Flat Top Complete Upper, with 1:8 twist Nitride barrel.
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Republic Firearms 16" M4 Flat Top Complete Upper, with 1:9 twist Nitride barrel.
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Republic Firearms 7.5" 300 Blackout M4 Flat Top Complete Upper, with 1:8 twist Nitride barrel
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Republic Firearms 7.5" .223/5.56 M4 Flat Top Complete Upper, with 1:7 twist Nitride barrel
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Republic Firearms 16" M4 Flat Top Complete Upper, with 1:8 twist Nitride barrel
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Republic Firearms 16" 6.5 Grendel M4 Flat Top Complete Upper, with 1:8 twist Nitride barrel.
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Republic Firearms 16" M4 Flat Top Complete Upper, with 1:8 twist Nitride barrel.
Custom Cerakote Options Available
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Republic Firearms 10.5" M4 Flat Top Complete Upper, with 1:8 twist Nitride barrel.
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Republic Firears 7.62x39 16" M4 Flat Top Complete Upper, with 1:10 twist Nitride barrel.
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Republic Firearms 16" M4 Flat Top Complete Upper, with 1:8 twist Nitride barrel.
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RF-15E 16" M4 Flat Top Complete Upper with 1:8 twist Nitride Barrel.
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Republic Firearms 6.8 SPC 16" M4 Flat Top Complete Upper, with 1:10 twist Phosphate barrel.
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Republic Firearms 16" M4 Flat Top Complete Upper, with 1:8 twist Nitride barrel
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