In the video after he puts the piece of paper in the primer hole and the hot glue, he says he puts the 7.62X39 shell into a "press". Could someone explain to me what kind of "press" is he using? I have a 14.5" A.A. 6.5 Grendel upper and a bunch of 7.62X39 brass. That would be handy if I could learn that trick. Thank you for the video post.