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Rainier Arms Forged A4 Upper Receiver - Gen 2

Rainier Arms

Rainier Arms Forged A4 Upper Receiver - Gen 2


Rainier Arms Forged Mil-Spec Upper Receiver

Rainier Arms flattop upper receiver is carefully machined to mil-spec to serve as a great foundation for a quality AR rifle.

Rainier Arms Forged Upper was designed to fit our forged lower receivers with color, texture, & machining. These uppers are "T - marked" engraved and have extended M4 feed ramps.

Gen 2 Uppers are deep black finish and match well with RA lowers and MEGA lowers


  • Made from 7075 - T6 aluminum
  • Type III hard coat anodized
  • Matte black finish
  • Dry lube coating: Inside to reduce wear and adds lubricity
  • "T - Marked" engraved
  • M4 Feed Ramp

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