Description
The ProMag 40-round hybrid magazine provides extended-capacity feeding for Ruger Mini-14 rifles chambered in .223 Rem / 5.56 NATO. The design pairs a DuPont Zytel-based polymer lower housing with a heat-treated steel upper for a balance of durability and weight savings. The magazine uses a heat-treated chrome silicon wire spring and an injection-molded follower to support consistent feeding. Made in the USA and backed by ProMag’s lifetime guarantee against manufacturer defects.
Key Specifications
- The magazine holds 40 rounds.
- Compatible with Ruger Mini-14 rifles.
- Chambering: .223 Rem / 5.56 NATO.
- The magazine body is constructed of steel & polymer.
- The finish is black.
- The spring is formed from heat-treated chrome silicon wire.
- The follower is injection molded.
- Dimensions: 1.25 x 2.70 x 9.50 inches.
- Manufactured in the USA and backed by a lifetime guarantee against manufacturer defects.
This magazine is a practical option for owners of Ruger Mini-14 rifles who seek higher capacity for range sessions and extended-use scenarios. Its hybrid construction and attention to feeding components aim to deliver dependable operation and long service life.






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