bbm IMHO, it's a claw hammer. I'm attaching a zoomed in version of the second screenshot you posted. I've inserted images of a rock pick hammer and a claw hammer. Notice that a rock pick hammer is not equidistant along the top. To anyone who has seen the movie Alien, the creature's head is a lot like a rock pick hammer - it tapers to a point in back. A claw hammer, on the other hand, IS equidistant along the top. It forms a "T" along the top. When I look at the object in SP's hand, I note that the front part of the head is flared out a little larger, and it's skinnier as you move back from that striking surface toward the center. That to me is more like a claw hammer (wider front surface because you're typically hammering nails) than a rock pick hammer, in which you don't need a wider front because you're not hitting smaller nail heads, you're hitting a rock surface that is often wider than the hammer itself). And to your theory about breaking the glass and pulling it gently into the building, a rock pick hammer doesn't seem to me to be as good at that kind of move as a claw hammer. The rock pick hammer's finely tapered point is good for punching a hole, but not so much for pulling the pieces back. The curved claw of a claw hammer would do a better job of pulling the pieces out toward you, IMHO. I also think the angle of a typical claw hammer's handle is a better match for what we see SP holding.