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The ProMag 42-round magazine lets you extend your range session between reloads without all the complexity that comes with drum-style magazines. Since it loads and operates like a standard capacity mag, there's no special maintenance, winding, or careful storage required. Just feed it rounds and go.
The body and follower are built from DuPont Zytel polymer, a high-performance material that handles impact, abrasion, and chemicals you'll encounter in shooting environments. The spring is heat-treated chrome silicon wire, which resists fatigue through repeated compression cycles and maintains tension even after long-term storage. These materials work together to keep feeding smooth and reliable without the learning curve of specialty magazines.
This magazine fits AR-15 and M16 type rifles chambered in both .223 Remington and 5.56 NATO, so you don't need separate mags for different ammo types. The internal design is optimized to present rounds smoothly to the chamber, which helps avoid common issues like double-feeds or nose-diving. At just over 11 inches long and weighing 0.4 pounds loaded, it won't throw off your rifle's balance or slow you down between stages.
ProMag manufactures these magazines in the United States and backs every unit with a lifetime warranty against manufacturer's defects. Whether you're running drills at the range or testing different setups, you get the confidence that comes with domestic production and genuine aftermarket support.
Unlike drum magazines, this extended magazine operates exactly like a standard capacity mag. You load it the same way, insert it normally, and don't need to wind it up or worry about special storage. It's lighter, more reliable for most applications, and fits standard mag pouches without modification.
Yes, this magazine is designed to feed both .223 Remington and 5.56 NATO interchangeably. The internal geometry accommodates both cartridges, so you can use it with either ammo type without concern.
It's a solid choice for range training and practice. The polymer construction holds up to repeated loading and cycling, and the lifetime warranty gives you peace of mind. Test it in your specific rifle before relying on it for critical applications.
Zytel is a high-performance nylon resin known for excellent strength-to-weight ratio and resistance to impacts, abrasion, and chemicals commonly found in shooting environments. Combined with the heat-treated chrome silicon spring, it creates a magazine built to last through years of use.
| UPC | 708279012679 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | COL-A16 |
| Brand Fit | AR-15 Platform |
| Caliber/Gauge | .223 REM/5.56 NATO |
| Capacity | 42 |
| Color | Black |
| Length | 11.0500 |
| Model | |
| Model Fit | AR-15 |
| Package Height | 1.0 |
| Package Width | 4.9 |
| Product Type | Magazine |
| Shipping Weight | 0.4 |
| State Restriction (CA) | NO DIRECT SHIP TO CALIFORNIA |
| State Restriction (IL) | NO SALE TO ILLINOIS PICA |
| State Restriction (OR) | NO SALE TO OREGON |
| State Restriction (RI) | NO DIRECT SHIP TO RHODE ISLAND |
| State Restriction (WA) | NO DIRECT SHIP TO WASHINGTON |
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