LEGO Sonic the Hedgehog Sonic's Speed Sphere Challenge Building Toy Set, Sonic Playset with Speed Sphere Launcher and 3 Sonic Figures, Fun Birthday Gift for Young Fans Ages 6 and Up, 76990 - Walmart.com
LEGO® Projectile Launcher/Cannon – Atlanta Brick Co
LEGO MOC 17101 - Hidden Launcher by Nodrap | Rebrickable - Build with LEGO