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JG15 ULTRALIGHT 300 Blackout Complete Upper Assembly – 13″




Upper receiver:

  • Compatible with most aftermarket/OEM handguards featuring indexing tabs
  • Billet 7075-T6 aerospace aluminum
  • Jacob Grey lightweight design
  • M4 feed ramps
  • Laser engraved logo
  • MIL-A-8625F Type III Class 2 hardcoat anodized flat black finish
  • Compatible with MIL-SPEC AR upper receiver parts
  • Weight: 3lbs 8oz



  • JG 13″ ULTRALIGHT Handguard

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The Jacob Grey Ultralight Complete Upper Assembly was designed with the next generation AR-15 in mind. This AR-15 complete upper assembly is built around the 7075-T6 billet upper receiver specifically machined and cut in areas where excess material was unnecessary and areas that see excess use and wear, reinforced and strengthened to give a sleek, refined look, without losing the classic lines of the AR-15 platform. It comes standard with the JG designed 13” free float 7-sided M-LOK hand-guard that is also lightweight and leaves plenty of room for customization or the addition of numerous accessories available for the AR-15 platform. The 13” barrel is chambered in 300 Blackout with a 1:8 twist rate. The barrel is machined from 4150 chrome moly steel and black Nitride finished for corrosion resistance and accuracy. Each barrel is individually head-spaced to the Carpenter 158 bolt. Combined with the 8620 steel carrier and black Nitride finish, this complete upper assembly is extremely reliable and smooth shooting.


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