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Mfg Item #: UST17ST
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
| Length | 20.1000 |
|---|---|
| Weight | 6.8000 |
| Caliber | .17HMR |
