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AR9 Right-Side Charging Bufferless Upper Assembly - 5" Parkerized M4 Barrel, 1:10 Twist Rate with 4" MLOK Handguard

Usually ships the same day or the next business day!

An ultra-compact 9mm upper. No buffer needed.

This Bufferless 9mm Pistol-Length Upper sports a 5" barrel with a 1:10 twist, plus a bufferless bolt carrier and recoil assembly contained entirely within the upper, significantly reducing overall length.

Includes Sealed, Bufferless End Plate

This upper includes a sealed end plate to cap the lower receiver! The plate features a Picatinny rail for attaching a folding stock adapter and covers any 9mm lower's buffer tube housing.

Other Upper Features

Also included is a 4" MLOK rail, and M4 flat-top billet upper receiver. Equipped with a top-tier 9mm bolt carrier group and a flash hider, this upper also showcases the latest Gen 2 Side Charging handle for seamless operation. Designed to seamlessly integrate with mil-spec AR9 80% lowers and retail AR9 lowers, this upper offers unparalleled performance and compatibility.

AR-9 Upper Assembly Specs


  • Chamber: 9mm
  • Contour: M4
  • Length: 5
  • Twist Rate: 1:10
  • Gas System: Blow-back
  • Muzzle Threads: 1/2x36
  • Feed Ramps: Single
  • Material: 4150 CMV
  • Finish: Parkerization
  • Process: Button Rifled
  • Lining: QPQ Nitride
  • Extension: M4
  • Muzzle: Spiral Flash Hider


  • Attachment System: 4" M-Lok
  • Finish: Type III Hardcoat Anodized (Mil-Spec)
  • Top Rail: Split Rail / 1913 / Picatinny Rail
  • Material: 6061-T6 Billet Aluminum
  • Attachment: Barrel Nut

Upper Receiver

  • Profile: A3 Flattop
  • Material: Forged 7075-T6 Aluminum
  • Finish: Type III Hardcoat Anodized (Mil-Spec)

Bolt Carrier Group

  • Profile: 9mm / Blow-back
  • Steel: 9310 Tool, HPT/MPI-tested
  • Exterior: Black Nitride
  • Interior: Parkerized
  • Gas Key: 9mm Blow-back
  • Charging Handle: Included Left-Side Charging

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