The Hexmag Shorty Magazine is designed for AR-15 pattern rifles offering reliable performance with .223 Remington/5.56 NATO ammunition in a 10-round capacity.Hexmag Shorty Magazine (Model HX1020-AR15-BLK)10-round capacity for .223 Remington/5.56 NATOCompatible with AR-15 and AR pattern riflesDurable polymer constructionBlack finishThis polymer magazine provides dependable feeding and is ideal for tactical applications hunting or range use where reduced capacity is required or preferred.