ProMag RM30SL StandardBlack DuPont Zytel Polymer Steel Lined Detachable 30rd for 5.56x45mm NATO AR-15
- Capacity-Rounds:
- 30
- Type:
- Magazines
- Firearm Group:
- AR Platform
- Caliber-Gauge:
- 223 Remington / 5.56 NATO
- Finish-Color:
- Black
- Model:
- Standard
- Material:
- DuPont Zytel Polymer
- Model Fit:
- AR-15
The ProMag RM30SL 30-round AR-15 magazine delivers reliable, affordable capacity for your 5.56x45mm NATO rifle without breaking the bank. Built from durable DuPont Zytel polymer with a steel-lined feed path, this magazine is engineered to handle the demands of the range, competition, or field. Whether you're stocking up for a day at the range or building a practical defensive battery, the RM30SL offers the round count and dependability competitive shooters and hunters expect—at a price that makes buying in quantity painless.
ProMag has been manufacturing magazines in the USA for decades, and the RM30SL reflects that manufacturing discipline. Each magazine undergoes precision assembly with heat-treated chrome silicon springs wound to exacting standards. The combination of reinforced polymer body and steel-lined internals is proven to stand up to repeated loading, chambering, and ejection cycles without degradation. This is a workhorse magazine designed to run, not collect dust in a range bag.
The 30-round capacity makes the RM30SL a practical choice for AR-15 owners who want to minimize reload frequency during extended shooting sessions. The proven polymer-and-steel construction balances weight savings with durability, so you're not carrying unnecessary bulk. ProMag backs every magazine with a lifetime manufacturer's warranty, reflecting confidence in the quality of their assembly process and material selection.
Key Features
- 30-round capacity for 5.56x45mm NATO cartridges
- DuPont Zytel polymer construction—lightweight and impact-resistant
- Steel-lined feed path for enhanced reliability and durability
- Precision-wound, heat-treated chrome silicon springs
- Made in the USA with rigorous quality control
- Lifetime manufacturer's warranty against defects
Specifications
| Capacity | 30 rounds |
| Caliber | 5.56x45mm NATO |
| Material (Body) | DuPont Zytel Polymer |
| Material (Feed Path) | Steel-lined |
| Spring Material | Heat-treated chrome silicon wire |
| Color | Black |
| Manufacture | USA |
| Warranty | Lifetime manufacturer's warranty |
Frequently Asked Questions
Will this magazine work in my AR-15 chambered in 5.56 NATO?
Yes. The RM30SL is designed specifically for AR-15 rifles chambered in 5.56x45mm NATO. It will not function reliably in other calibers.
What's the advantage of the steel-lined feed path?
The steel lining protects the interior of the magazine from wear caused by repeated loading and feeding of rounds. This extends the service life of the magazine and helps maintain consistent feeding reliability over thousands of rounds.
Is the polymer body durable enough for regular use?
Yes. DuPont Zytel is a proven engineering polymer that resists impact, UV, and environmental degradation. Combined with the steel-lined feed path and heat-treated spring, the RM30SL is built to handle regular range and field use without premature failure.
What warranty does ProMag offer?
ProMag backs the RM30SL with a lifetime manufacturer's warranty against defects in material and workmanship, reflecting confidence in their precision manufacturing and assembly process.

