Upper Build Kit 9mm Slick Side Upper Receiver Combo + 9mm Barrel 1/2 x 36

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$80.83 - $95.95
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Right To Bear 9mm Medium Profile Barrel 1/2 x 36 + 9mm Slick Side Upper Receiver Combo

This combo kit comes with a 9mm Right to Bear Barrel and a SlickSide 9mm (.22LR compatible) upper receiver. The Right To Bear 9mm Barrel is machined in house on state-of-the-art CNC machines and are thoroughly inspected at multiple stages of the build process to ensure quality. This barrel is machined from 4150 Chrome Moly Vanadium Steel and has a 1:10 twist rate. Available in multiple thread pitches. The final process is a salt bath Nitride finish for an added layer of protection.The RTB Upper is made from forged 7075-T6 aluminum and is Hard Coat Anodized. It meets military specifications and comes in a slick side configuration. The ejection port door is sized for 9mm and 22LR. This upper does have a shell deflector, but does not have a forward assist.



  • Material - 4150 Chrome Moly Vanadium
  • Profile - Government
  • Finish - QPQ Corrosion Resistant
  • Gas System - Blowback
  • Gas Block Journal - No gas block or tube required
  • Twist Rate - 1:10 Inches
  • Muzzle - 1/2x36 Threaded
  • Machined from a Mil-Spec 7075 T6 forging
  • Type III Hardcoat Anodized finish

These uppers are machined to extremely tight tolerances for a more accurate build. Seating the barrel may take additional force. Light taps with a rubber mallet will do the trick.

Please Note: These uppers are only compatible with .22LR and smaller pistol caliber rounds, such as 9mm and .40