Upgrade Kits

Maximize your gel blaster's potential with our comprehensive range of Upgrade Kits at Gel Ball Undercover. Designed to enhance performance, durability, and accuracy, these kits are perfect for taking your gameplay to new heights. Invest in an upgrade kit and dominate the battlefield with ease!
2025 SALE! SALE! Rifles Pistols Customs Gel Balls Pistol Upgrades Parts Accessories Tactical Gear
  • M4A1 2025 V8 Turbo Kit

    M4A1 2025 V8 Turbo Kit

    Sale

    M4A1 2025 V8 Turbo Kit

    $159.99
    $199.00 $159.99
    19% OFF Sold out
    Sale
  • 2025 Universal High Speed & Accuracy (Upgrade Package)

    2025 Universal High Speed & Accuracy (Upgrade Package)

    Sale

    2025 Universal High Speed & Accuracy (Upgrade Package)

    $115.00
    $130.00 $115.00
    11% OFF Sold out
    Sale
  • 2024 Universal V2 Stage 2 Modification (Upgrade Package)

    2024 Universal V2 Stage 2 Modification (Upgrade Package)

    Sale

    2024 Universal V2 Stage 2 Modification (Upgrade Package)

    $199.99
    $229.99 $199.99
    13% OFF Sold out
    Sale
  • 2024 Universal V2 Stage 3 Modification (Ultimate Package)

    2024 Universal V2 Stage 3 Modification (Ultimate Package)

    Sale

    2024 Universal V2 Stage 3 Modification (Ultimate Package)

    $259.99
    $310.00 $259.99
    16% OFF Sold out
    Sale
  • Gen 9/ ACR J10 (Stage 3 Comp Kit)

    Gen 9/ ACR J10 (Stage 3 Comp Kit)

    Sale

    Gen 9/ ACR J10 (Stage 3 Comp Kit)

    $129.99
    $300.00 $129.99
    56% OFF Sold out
    Sale
  • MK V2 Complete Internal Kit

    MK V2 Complete Internal Kit

    Sale

    MK V2 Complete Internal Kit

    $297.00
    $330.00 $297.00
    10% OFF Sold out
    Sale