Pro Mag Industries AR-15 Magazine Features The ProMag AR-15 Magazine holds 30 rounds of 5.56 NATO or .223 Remington and is built from a proprietary DuPont Zytel based polymer chosen for its strength and consistency under repeated cycling. A patented anti-tilt roller follower keeps rounds properly oriented as they feed reducing the chance of a malfunction under rapid fire. The magazine spring is precision wound from heat treated chrome silicon wire a material selected for its ability to hold tension over long service life without weakening. Every step of the assembly process is checked and double checked giving shooters a magazine built to a consistent standard rather than a variable one. Finished in clear polymer this magazine lets shooters quickly confirm how many rounds remain without removing it from the rifle a small but useful feature at the range or in the field. It is manufactured entirely in the United States and backed by ProMag s lifetime guarantee against manufacturer defects giving buyers confidence in long term reliability. The 30 round capacity matches the standard magazine length AR-15 shooters expect dropping cleanly into any standard AR-15 magazine well. This ProMag magazine is available for sale at GrabAGun as a dependable affordable option for range use training and duty preparation. Pro Mag Industries AR-15 Magazine Specifications Manufacturer: ProMag Industries Model: AR-15 Magazine Caliber: 5.56 / .223 Rem Capacity: 30 Rounds Material: Polymer Color: Clear Compatible Hosts: AR-15 Country of Origin: USA Available At: GrabAGun