G1 to G2 Upgrade Service

KRISS USA offers a comprehensive upgrade service to convert your Gen 1 Vector to full Gen 2 specifications. This service completely refurbishes your firearm, bringing it up to date with all the enhancements introduced in the Gen 2 platform—improving performance, compatibility, and reliability.

Cost of the Upgrade

The average cost ranges from $325 to $375, but the final price may vary depending on:

  • Parts required
  • Amount of rework needed
  • Any accessories or upgrades you request

After our gunsmith team completes an initial inspection of your Gen 1 Vector, we will provide you with a detailed service estimate.

No work will be performed without your approval.

What is Updated?

The Gen 2 Vector (introduced in 2015) includes several major upgrades:

  • Redesigned fire control group with a crisp, tactile ~5.5 lb trigger
  • Improved safety selector with a shorter throw for easier operation
  • Updated internal components for enhanced function, compatibility, and long-term reliability

Note

Some Gen 1 features are no longer supported.
For example, the integrated light mount from Gen 1 is no longer produced, as the SureFire E1B light it was designed for has been discontinued.

Stock Compatibility

When upgrading to Gen 2, you’ll choose between two upper receiver configurations:

Option 1: Gen 2 Upper Housing

  • Maintains the proprietary hinge mount used on the Gen 1
  • Compatible with the original Vector Folding Stock

Option 2: Gen 2.1 Upper Housing (Released April 2017)

  • Features integrated AR buffer tube threading
  • Compatible with:
    • AR buffer tubes (no adapter needed)
    • KRISS Ambidextrous Folding Stock
    • KRISS Ambidextrous Folding Adapter

Note

The original Vector Folding Stock is not compatible with the Gen 2.1 upper, and no adapter is available for this setup.

Ready to Upgrade?

If you’d like to send in your Gen 1 Vector for a Gen 2 upgrade:

  1. Contact our support team

  2. A service ticket will be opened on your behalf

  3. We’ll provide detailed shipping instructions and next steps