I was battling a very dangerous xenos on LV-426 when I was pounced on by 2 of these clever beasts. With a mighty swing, my chainfist bit deeply into the face of the first creature, felling him. As I raised my bolter towards the second, it side-stepped and lashed its tail at me. The bolter took the brunt and was cracked in two.
All joking aside, it was my poor balance that broke it. One of my ninja-like cats snuck into my studio while I was working on the costume and her tail went under my foot. As I switched balance to avoid crushing her, I ended up falling on the bolter, ripping the foam in half. I might be able to repair it, but I think it's best to start new.