The Messerschmitt Me262A-1a was so fast that it frequently overshot its targets. W.Gr.21 rockets corrected this problem by letting the Germans stand off and fire. These rockets could fly over 1,000 yards (1,000m), allowing the Me262s to stay outside of their enemy's effective range. The rockets carried a 90 lb (40.8 kg) explosive warhead that would shred even the vaunted B-17. This limited edition kit features new metal W.Gr.21 rocket parts. Skill level: 3. Ages 14+.