Quick Change Uppers(QCU)



EVOLVE Platform



Due to supply chain issues orders may take 6 to 8 weeks to ship. We manufacture the lower receivers, upper receivers, handguards, R.A.C. system, muzzle brakes, scope mounts, back-up sights and red-dot risers. We do not currently manufacture the rest of the components used to build our rifles. Due to this we are subject to the manufacturing and shipping constraints of our suppliers. We will work diligently to assemble and ship your order as fast as possible.

Product price: $914.00
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Quick Change Uppers

Already have an EVOLVE rifle, pistol or SBR and want additional caliber or barrel length options? Well we got your back with our Quick Change Uppers built to take full advantage of the EVOLVE’s R.A.C. system. Now you can quickly swap out your upper for whatever purpose needed or just add more capabilities to your collection. Just like our full EVOLVE rifle the Quick Change Uppers come standard with our ARCA Rail handguards. So go ahead and continue to EVOLVE YOUR RIFLE.

  • Upper Receiver machined from 7075 Billet Aluminum
  • Handguard machined from 6061 Billet Aluminum
  • Bolt Carriers are full auto rated made from 9310 Steel
  • Muzzle Devices: 4 port “X-Brake” featuring four 1″ x 1/4″ ports and an 11 degree target crown, KAK Flash Can or a thread protector for those who want to add a suppressor.
  • Available for all EVOLVE platform rifles
  • Exclusive to 51Fifty EVOLVE rifles, does not work with milspec rifles
  • 100% made in America


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