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The MUR is a rigid Mil-Spec flat-top upper made to fit all AR15/M16 M4 rifles and carbines. The MUR was developed to give the customer a Mil-Spec correct upper receiver with a thicker wall, making the MUR upper receiver a stronger platform. This more rigid upper receiver will increase accuracy and reliability, while extending the life of the interfacing components. The MUR-1A model comes equipped with a shell deflector and forward assist. The MUR-1S comes with a one-piece machined shell deflector only.


  • Aircraft-grade aluminum construction
  • Machined from 7075 Forging
  • Stress relieved, heat treated, aged twice and cryogenic treated
  • Hard coat anodized, black per MIL-A-8625 TYPE III Class 2
  • Precision machined and finished by hand
  • Bore coated with dry film lube over the anodized surface
  • Compatible with all Mil-Spec AR-15 parts and accessories
  • Available with (MUR-1A) or without forward assist (MUR-1S)
  • M4 feed ramps
  • Weight: 9.80 oz
  • Height: 2.121 in
  • Length: 7.657 in

Due to our Lifetime Warranty, we advise that you not remove or attempt to remove your shell deflector. The shell deflector is pinned in place during factory assembly. Our Lifetime Warranty covers all of our products as long as they are not modified in any way (i.e. disassembly). We do offer a service in house that will maintain your Lifetime Warranty. Please contact us for more information.



Flat Dark Earth (FDE), Tan


Vltor Weapons




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Vltor MUR-1A Modular Upper Receiver (Bolt-Assist/Shell-Deflector, With Forward Assist) – FDE/Tan

Our Price:

  • MSRP$219.95
Vltor MUR-1A Modular Upper Receiver (Bolt-Assist/Shell-Deflector, With Forward Assist) - FDE/Tan $188.96

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5004 State Highway 74 Cape Girardeau, MO 63701
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