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Rainier Arms AR-15 MUR Mountain Upper Receiver

Out of stock

Rainier Arms AR-15 MUR Mountain Upper Receiver


Description: Rainier Arms Custom

Our Rainier Arms Mountain MUR upper receiver group was designed for the enthusiast that's looking for an awesome foundation for their next upper build using our 16" 1:7 twist Mountain series barrel, the Vltor MUR upper receiver group and Lo Profile gas block. The rest is entirely up to the customer and can be easily built out.

Does NOT come with a BCG, Muzzle device, Charging handle or handguard. Component List:

  • Rainier Arms Mountain Series 16" Mid Weight Barrel
  • Midlength Gas System with 1:7 Twist
  • Rainier Arms Match Lo Pro gas block
  • Vltor MUR Upper receiver with UPK
  • Rainier Arms Barrel nut
  • Gas tube
  • Weight: 2lbs 7oz
More Information
SKU RA1501
Manufacturer Rainier Arms, LLC