Based on the Kenner action figure that was never released with the rocket that projectile fires.
Possibly sold out as of 8/2013.
From Gentle Giant:
Gentle Giant Ltd. is proud to present their take on one of the most legendary toys in action figure history - the Star Wars Boba Fett Rocket Firing Jumbo Kenner Action Figure! Unreleased back in the 1970s due to safety concerns, the few figures that found their way out of Kenner's factories are some of the most sought-after Star Wars collectibles in the world. Digitally scanned from an authentic 3 3/4-inch Kenner prototype and reproduced at a substantial 12-inches tall, no detail has been overlooked. Injection molded and made of durable plastics, this jumbo figure comes fully articulated and includes real rocket-firing action! That's not all, this classic Kenner creation comes packaged on a 1979 Star Wars-inspired blister card featuring original photos and artwork, including a re-sealable plastic outer clam shell to help protect and display this limited edition collectible on your wall, shelf or favorite show case.