Shop › MAG STEYR HS50M1 50BMG 5RD MAG STEYR HS50M1 50BMG 5RD $375.00 Steyr Arms Magazine, 50 BMG, 5 Rounds, Black, SSGM1 6101050501 Quantity: Add To Cart Added! Steyr Arms Magazine, 50 BMG, 5 Rounds, Black, SSGM1 6101050501