Ukraine's arms makers say they need to figure out how to constantly update their weapons — without slowing output

Arms makers want to be able to make constant changes to their products, but with enough stability to be able to produce at scale. Sean Gallup/Getty Images Ukraine's arms makers must constantly update weapons to keep them relevant. But frequent redesigns can slow production when the military needs weapons at scale. Companies are changing how they build gear to balance speed, scale, and adaptation. Defense companies supplying Ukraine's army are trying to strike the right balance between…