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Rainier Arms RUC DI 300BLK Partial Upper Receiver - 10.7"

AR-15 Partial Upper Receiver

Out of stock


Rainier Arms RUC DI 300BLK Partial Upper Receiver - 10.7"

Special Price $400.00 Regular Price $500.00

The RUC DI Partial Upper is a high-quality and affordable upper build that features a direct impingement operating system on a Rainier Arms Select barrel, an Urban Combat Rail for a durable and reliable handguard, and a low-profile .750 gas block for accuracy. This build also includes a Rainier Arms Forged Upper Receiver and an A2 flash hider for quiet shooting. Whether you're a beginner or a seasoned pro, the RUC DI Partial Upper is a winning combination that is sure to give you an edge in any situation.

Upper Build:

  • Rainier Arms Select 300BLK 1:7 Twist Barrel - 10.7"
  • Rainier Arms Forged Upper Receiver
  • Rainier Arms Urban Combat Rail - 9.5"
  • Rainier Arms Low Profile .750 Gas Block (Gasblock pinned)
  • A2 Flash Hider - 5/8x24
More Information
SKU RA-RUC-DI-300BLK-107-PU
Product Type AR-15 Partial Upper Receiver
Manufacturer Rainier Arms, LLC
Gas Block Diameter .750"
Thread Pitch 5/8x24 (.30 cal)
Twist Rate 1:7
Color Black
Rail Length 9.5"
Mount M-LOK
Barrel Length 10.7"
Caliber 300 Blackout
Threaded Yes

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