Jeroha shows his homemade DIY Shell ejecting Nerf .50 Cal rifle and how he built it. He mentions it as an airsoft but it fires Nerf foam darts as seen in the video instead of BBs... "A DIY .50 Cal Airsoft sniper made with cutting boards, pvc and 3D printed parts. The springs i got out of a mechanical party popper from the Albert Heijn store."