Yankee Hill Machine Co Upper Specter Black Diamond Carbine Top End 5.56 NATO 16" Barrel 1:7 Twist Fits AR Rifles

Specifications :

- 5.56mm NATO (accepts .223 Remington)

- Forged 7075-T6 Aluminum YHM Flat Top Upper Receiver

- T Marked Upper Receiver

- Forward Assist

- 16" 4140 Steel Barrel Heat Treated to RC 25-32

- 1:7" Twist

- YHM Diamond Fluting

- YHM Phantom 5C2 Flash Hider

- YHM Carbine Length Diamond Specter Handguard

- YHM Forearm Endcap

- Low Profile Gas Block

- YHM Flip Front Sight Rail Mounted

- YHM Flip Rear Sight

- Weighs 4.8 lbs

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