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BT Delta Upgrade Kit


Your Price $89.95

The BT Delta Upgrade Kit will take your marker from a stock BT-4 and transform it into a complete BT Delta marker, with its authentic submachine gun styling.

Detla Upgrade Kit Includes:

  • 9” Precision barrel and shroud with Apex ready tip
  • Adjustable Collapsible stock
  • Picatinny mounted magazine
  • Picatinny Mount Clamp Elbow with Shroud


  • Fits any BT-4 model marker
  • Authentic SMG styling

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