4504 .50 Beowulf 10 M .50 Bewoulf Magazine, 10 Match A conversion of the standard 30 round NATO 5.56 magazine to take 10 rounds of the Match .50 Beowulf ammunition. .50 Beowulf 10 M Alexander Arms' 10 rounds magazine of 300g Gold Dot .50 Beowulf ammunition. 1024 388 1 751 5 4 20 240 5 1 1 1 6 70 -10 2 6 388 38 10 18