The ProMag RM-20 is a 20‑round detachable magazine designed for AR-15 pattern rifles chambered in .223 Rem / 5.56 NATO. It uses a proprietary DuPont Zytel polymer body and a patented anti-tilt roller follower for reliable feeding in a variety of shooting applications. The RM-20 is built with a heat-treated chrome silicon wire spring and is made in the USA.
Key Specifications
- The capacity is 20 rounds.
- The caliber is .223 Rem / 5.56 NATO.
- The construction material is DuPont Zytel polymer.
- The finish is black.
- The follower type is a patented anti-tilt roller follower.
- The magazine spring is formed from heat treated chrome silicon wire.
- The magazine is a detachable type intended for AR-15 pattern rifles.
- The model designation is RM-20 / Standard.
- The fit is for the AR-15 platform.
- Country of manufacture is USA.
This magazine serves as a practical spare or replacement for range sessions, training, and general field use where a durable, lightweight polymer magazine is preferred. Its patented roller follower and robust spring construction aim to provide consistent feeding and straightforward maintenance for routine use. The DuPont Zytel body offers a balance of impact resistance and low weight, making the RM-20 suitable for users who need dependable magazines for practice or duty-oriented applications.
This description was generated with AI and may contain errors. Verify specifications and legal restrictions with the manufacturer before purchase. Provided “as-is” without warranties or guarantees.




