The Dwarves for many years did not know any other folk, until Firebeards and Broadbeams had their first meeting with the Elves in Beleriand in the year 1250 of the Years of the Trees. From that time on there was friendship between the Sindar and the Dwarves, and they began exchanging knowledge and creating ring-mails and many other works; the Dwarves of Nogrod were unmatched in Middle-earth in smithing.
Dwarves are naturally methodical and slow to panic; and so are suited to reloading and firing both weapons calmly, even when the enemy is right on top of them. The competition between various engineers is such that in the efforts to make increasingly better and more reliable weapons Dwarf Handguns have become the most effective weapons of their type in the world. Most Thunderers have crafted their own weapons and over the years add many augmentations and improvements.