0809160048a_HDRmod August 8, 2016 at: 1500 × 844 In: Be Ready for the Western Front Offensive of 1919 with the WWI Pedersen Device ← Previous Next → The 4.85 British (center) was developed in the UK and competed in the NATO trials that eventually standardized on the Belgian 5.56mm SS109 load (left). Like the similar German 4.9x45mm DAG (right), it is based on the 5.56mm case.