We've recently released WW2 British Tulip rockets.
The rockets are available as separate items or mounted on a Sherman, Staghound or Cromwell.

Prices:
6mm from £1.73
12mm from £2.00
15mm from £3.00
20mm from £5.50
28mm from £3.00
The models are available in most scales.
Everything is 3D printed to order.
STL files available

LINK