Quick view 50cal AR15.com 10 ROUND 50 CAL MAGAZINE A STEWL 50 CAL (BEOWULF) 10 ROUND MAGAZINE MODIFIED BY US SOTHE LONGER 400 GRAIN AND 420 GRAIN BULLETS CAN PROPERLY FEED AND NOT JAM ON THE FRONT OF THE MAGAZINE ExoticAR15. 50 cal AR15..com ONE IN THE SAME. MSRP: Was: Now: $40.00 Add to Cart