Lego Halo Grenade Launcher by JammNt on DeviantArt
Lego M4A1 (working) with M203 grenade launcher - YouTube
teamwork.tf bot on Twitter: "[/r/tf2 art] Made the Grenade Launcher with moving parts out of lego(Sorry for the low quality screenshots) https://t.co/DOBXOQ925Z #TF2 https://t.co/ixPCgCNRko" / Twitter