The program also uses a 'spiral development' approach, whereby the weapon and ammunition is rolled out in stages or 'spirals', each stage producing a new version that is an improvement on those from previous spirals.
該計劃還採用了“螺旋式發展”的方法，由此武器和彈藥在每個階段鋪開或是“螺旋”，每個階段產生一個從以前的螺旋改進而成的新型版本。