$12.99
1227 in stock
Online inventory may differ from in-store availability.
Quick turnaround so you get your gear sooner.
Trusted checkout with industry-standard protection.
Keeping Traditions Alive Since 1953
Secure Transactions provided with 
The Mission First Tactical Extreme Duty magazine is engineered for AR-15 and M4 platforms that see serious use. It uses next-generation long glass fiber polymer instead of standard nylon, which means you get a mag that won't warp as easily, handles drops without cracking, and stays rigid even when temperatures spike. The polymer stiffness lets it keep its shape under load without adding weight, and the longer reinforcing fibers prevent deformation and polymer fatigue over time.
These mags have earned their durability reputation through real-world testing. The ribbed front and rear gripping surfaces give you solid control during reloads, even if you're wearing gloves or working quickly. The flared floor plate makes one-handed reloads easier and lets you extract mags from tight mag carriers without struggling. An oversized bolt catch notch makes sure you get reliable hold-open, even on slightly out-of-spec receivers. The baseplate comes off with zero tools using double safety release tabs, so you can strip the magazine down for cleaning in seconds.
A four-way anti-tilt follower keeps every round perfectly aligned as it feeds into the chamber. The long-life USGI-spec stainless steel spring doesn't lose tension like cheap springs do. Reviewers consistently report smooth, trouble-free feeding in both semi and full-auto applications. The magazine accepts both standard and heavyweight subsonic rounds, making it work for .223 Remington, 5.56 NATO, and even .300 Blackout loadouts. A paint pen dot matrix on the body lets you mark and identify your magazines for different loads or uses.
The Extreme Duty uses next-generation long glass fiber polymer that's engineered to be 50% stronger and 3x more impact-resistant than traditional nylon. It features a four-way anti-tilt follower and USGI-spec stainless steel spring for reliable feeding. The flared floor plate and oversized bolt catch are tailored for easier handling and consistent bolt hold-open operation. Build quality and feed reliability put it in the same class as top-tier options.
Yes, the Extreme Duty magazine is compatible with .300 Blackout ammunition, including heavyweight subsonic loads. Since both .300 Blackout and 5.56 NATO rounds can feed reliably from the same magazine, color-coding different loaded mags is a practical way to keep your ammunition types organized and prevent cross-loading confusion.
Absolutely. The magazine features tool-less disassembly with double safety release tabs on the floor plate. You can completely break down the magazine, clean the spring and follower, and reassemble it all without any special tools. This makes maintenance quick and easy, and you can do it anywhere.
The Extreme Duty magazines have been tested extensively in both semi-auto and full-auto conditions with proven reliability. The design prioritizes smooth loading, consistent feeding, and durability through reinforced polymer construction and premium internal components. The four-way anti-tilt follower and quality spring ensure rounds feed properly under any conditions.
| UPC | 814002022935 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | EXDPM556 |
| Caliber/Gauge | .223 REM/5.56 NATO |
| Capacity | 30 |
| Color | Black |
| Length | 8.4000 |
| Model | |
| Model Fit | AR-15 |
| Product Type | Magazine |
| Shipping Weight | 0.325 |
| 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 |
You must be logged in to post a review.
Reviews
There are no reviews yet.