LEGO Projectile Launcher Spring Shooter 15301 & 2 Trans Orange Missiles 15303 | eBay
BrickLink - Part 15301c01 : LEGO Projectile Launcher, 1 x 4 Spring Shooter with Light Bluish Gray Top [Projectile Launcher] - BrickLink Reference Catalog
LEGO Star Wars 75301 Luke Skywalker's X-Wing Fighter™ - Lego Speed Build Review - YouTube
LEGO Parts - Dark Bluish Gray Projectile Launcher Shooter - No 15301 - QTY 10 | eBay