Grid Defense 10.5″ 300 Blackout Upper Receiver
- Hard Coat Black Anodized
- Chambered in 300 Blackout (7.62×35)
- 7075-T6 Milspec Upper Receiver
- 10.5″ 1:8 Twist 4150 Steel Light HBar Barrel – Black Nitride
- .750 Low Profile Gas Block
- Pistol Length Gas System
- A2 Flash Hider
- Made in the USA
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