You’ve seen fully-3D-printed pistols and automatic rifles with 3D-printed magazines; now, here’s a rifle made entirely of 3D-printed parts. And it works… kind of.

In the above video, a YouTube user identified only as ThreeD Ukulele fires his creation, the first of its kind. To the casual observer, it looks like everything goes as planned, but the round splits the barrel and another section of the gun. According to its creator, “some changes will need to be made” in the next version.