Designed to fit your Ruger MINI-14, this ProMag Replacement Magazine will provide guaranteed reliability and smooth-feeding action. Durable blued steel finish with DuPontA(R) Zytel polymer follower and base plate. 10-round capacity. For use with Ruger MINI-14 rifles .223 Remington / 5.56x45mm NATO Heat-treated blued steel 10-round capacity DuPontA(R) Zytel Polymer follower and base plate Heat-treated chrome-silicon spring Order today!