Amazon offers the ProMag COL-A16 42-Round Black AR-15/M4 PolyMag in 5.56 NATO/.223 Remington for $19.99 plus $4.49 shipping. Limited inventory: only six of these remaining in stock.
These ProMag magazine bodies and followers are injection molded from strong, lightweight polymer. The springs are precision wound using heat-treated chrome silicon wire. The result is quality, consistency, durability and reliability.
Item Has Limited Inventory