16" 1:7 M4 Flattop Upper, Front Sight Base
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![16" 1:7 M4 Flattop Upper, Front Sight Base](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 125 145" width="125" height="145"></svg>)
18" 1:8 Fluted HBAR "3GR" Flattop Upper, Low Profile Gas Block
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18" 1:8 Fluted HBAR "3GR" Flattop Upper, Low Profile Gas Block
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16" 1:9 M4 Flattop Upper, Gas Block
$329.99
In stock
SKU
ARBU409
Our 16" M4 Flattop Upper starts with our 5.56 chambered 16" M4 barrel made from 4140 chrome moly steel utilizing the CAR length gas system. This barrel is attached to our flattop upper and uses our double heat shield M4 handguards. The upper is fully assembled and all parts are completely made in the USA.
| Caliber | 5.56x45mm NATO |
|---|---|
| Twist Rate | 1:9 Right Hand |
| Barrel Length | 16" |
| Barrel Type | M4 |
| Barrel Material | 4140 Chrome Moly |
| Barrel Features | Black Nitride Finish, M4 Feed Ramps |
| Upper Receiver Features | "T"-Marks, Brass Deflector, Forward Assist, M4 Feedramps |
| Upper Receiver Material | Forged Aircraft 7075 T6 Aluminum |
| Upper Receiver Coating | Type III Anodize |
| Sight / Gas Block | Picatinny Rail Gas Block |
| Muzzle Device | A1 Phantom Flash Hider |
| Handguard | DS4™ Double Heat Shield |
| Country of Manufacture | United States |
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