SA-2 Guideline Hobby Rocket Kit This Soviet designed surface-to-air missile was the first to actually take down an enemy aircraft in flight. The SA-2 Guideline was deployed near Soviet cities, such as Moscow, to defend against USAF bombers during the cold war. Later, they were also used in East Germany. This hobby rocket has three sets of fins, and an expanding tail cone. This unique design can make it fun to build, and exciting to launch on a D12-5 or D17-7. The finished semi-scale rocket stands 26.5" tall and has a fin span of 5.625". $27.95  Model Rocket Dimensions Overall length : 26.50" Diameter : 1.637" (BT60) Forward Fin Span : 5.625" Weight : 5.3oz Recommended Hobby Rocket Engines Estes® D12-5 Reloadable Aerotech® RMS D15-7 Challenges The SA-2 Guideline military-style kit has an expanding tail cone. This is cut from a card stock template and shaped into a tail cone by the rocketeer. There are three sets of fins to be cut. One set of fins goes on the nose cone. Parts This scale hobby rocket kit includes a motor mount kit with plywood centering rings. A third plywood centering ring is provided for the tail cone. Parachute kit included for recovery.