Customize Your Cart to Carry Just What You Need. Gun Holder Brackets Bottom Foam Holders $30.00 – $40.00 Bracket – Kolpin Gun Grips $40.00 – $80.00 Brackets – Lower $40.00 – $60.00 Brackets – Upper Left $20.00 – $65.00 Brackets – Upper Right $20.00 – $65.00 Case Bracket Top 9″ VooDoo 3Gun Case $50.00 Double Mount Bracket $85.00 Wheel Kits 12″ Pneumatic Wheel Kit – BLK/BLK $150.00 12″ Pneumatic Wheel Kit – BLK/GRY $150.00 12″ Run Flat Wheel Kit – BLK/GRY $180.00 16″ Pneumatic Wheel Kit – BLK/GRY $160.00 – $180.00 Balloon Wheel Kit $400.00 Utility Shelves 12″ Cart Shelves $80.00 16″ Cart Shelves $90.00 18″ Cart Shelves $95.00 – $350.00 Bells and Whistles Water Bottle Packs $35.00 – $50.00