The MDT® Straight-Fit Remington® 783 SA .308 10-Round Magazine was designed to fit in factory stocks to let users increase their magazine capacity from the usual low-capacity factory mag. The upper section of this magazine features 6061-T6 aluminum construction for reliable latching while the polymer lower section provides a durable base and better handling for quick mag swaps. Plus, a removable bottom cover plate makes cleaning and maintenance a breeze.