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Sigma Six Tactical Upper Receiver and 10.5″ 5.56 Barrel W/ Nickel Boron Bolt Carrier Group and 9″ M-Lok Handguard

AR15105569HG

$243.69

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Includes:

  • AR-15 Upper Receiver (No Forward Assist)
  • 10.5″ 5.56 Carbine Length Barrel
  • 9.25″ M-Lok Handguard
  • 5.56 Nickel Boron Bolt Carrier Group

Upper Receiver Specifications:

  • Forged 7075-T6 Mil-spec receiver for a standard AR-15 rifle
  • Picatinny rail, t-marks, and M4 Feed Ramps

Handguard Specifications:

  • Black Hardcoat Anodized
  • Full M-Lok Compatibility (7 Sides)
  • Anti-Rotation Tabs
  • 6061 Aluminum Construction
  • 6061 Aluminum Barrel Nut
  • Slim Profile Design
  • Compatible with all Mil-Spec Upper Receivers
  • Weight 18.2 Ounces

Barrel Specifications:

  • Chamber: 5.56 NATO
  • Contour: Socom
  • Fluted: No
  • Length: 10.5″
  • Twist Rate: 1:7
  • Gas System: Carbine Length
  • Diameter at Gas Port: .750
  • Thread Pitch: 1/2×28
  • Feed Ramps: M4
  • Material: 4150 CMVS
  • Finish: Black Nitride
  • Process: Button Rifled
  • Lining: Black Nitride

Bolt Carrier Group Specifications:

  • 223/5.56 Caliber
  • Nickel Boron Carrier
  • Matte Nickel Boron Finish
  • Bolt Material: 9310
  • Carrier Material: 8620
  • M16 Full Auto Style Carrier
  • Forward Assist Serrations
  • Nickel Boron Bolt, Carrier key, & bolt components
  • Mil-Spec Gas Rings
  • Mil-Spec Staked Gas Key
  • MPI Tested
  • Fully assembled

Additional information

Weight 1.5 lbs
Dimensions 12 × 6 × 6 in

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