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Mfg Item #: UST17
17 HMR AR-15 Upper Features: 18" Barrel, 1:9 Twist Rate, 1/2-28RH Threading, A2 Flash Hider Included, Blowback Operating System, Black Color (Optional Cerakote Upgrades Below), Two 10-round magazines, Parts Kit for Lower Conversion Included, Weight of upper is 4.5 pounds
| Twist | 1:9" |
|---|---|
| Series | Assembly |
| Sights | None, Optic Ready |
| Caliber | 17 HMR |
| Handguards | M-LOK |
| Barrel Finish | Black |
| Barrel Length | 18" |
| Handguard Finish | Black |
| Barrel Length Range | 18" to 18.99" |
