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The .450 Bushmaster is unforgiving on magazines. Unlike standard AR-15 mags designed for smaller tapered rounds, DURAMAG engineered this stainless steel 5-rounder specifically for big-bore geometry. The proprietary internal bracing system laser-welded into the 410 stainless steel body controls how rounds sit in the magazine and prevents the double-stacking problems that cause feeding failures. This isn't a workaround. It's a complete redesign from the ground up.
Standard magazines deform under the unique stresses of big-bore cartridges, often failing after just 10-20 cycles. The DURAMAG addresses the root cause: geometry. The Advanced Geometry Follower keeps rounds level and centered throughout the magazine's life. LipLock technology holds each round in proper alignment. The stainless steel construction won't flex or swell under heavy use or storage, delivering reliable feeding on the hundredth round just as it does on the first.
The 410 stainless steel body gets a T-360 coating for corrosion resistance and smooth handling. Inside, EverFlex anti-fatigue spring technology maintains consistent pressure without wearing out even if the magazine stays loaded for extended periods. The robotically welded Post and Hole design locks both halves of the magazine together with precision, preventing the kind of structural failure other .450 mags experience. Field testing and manufacturer validation have confirmed thousands of reliable rounds through these magazines with zero deformation.
If you're running .450 Bushmaster, you probably know the feeding hassles. Whether you're taking it to the field or the range, this magazine takes the magazine question off the table. It fits standard AR-15 magazine wells and holds 5 rounds of .450 Bushmaster ammunition.
The .450 Bushmaster is a straight-walled, big-bore cartridge that's too wide to double-stack. Standard AR-15 magazines designed for smaller tapered rounds don't have the correct geometry to support it reliably. Rounds can misalign, tip up, or even deform magazines after repeated use. DURAMAG solved this by designing the entire magazine around .450 geometry instead of adapting a 5.56 design.
DURAMAG engineered this from the ground up specifically for .450 Bushmaster with a proprietary internal bracing system and laser-welded stainless steel body. Unlike aftermarket followers or springs that are band-aid fixes, this magazine prevents misalignment at the source through geometry. Testing confirms it handles thousands of rounds without deformation, where cheaper alternatives can fail after 10-20 cycles.
Yes. The 410 stainless steel construction won't flex or swell like aluminum or polymer magazines can under extended loaded storage. The EverFlex anti-fatigue spring maintains consistent tension indefinitely, so long-term storage isn't an issue.
It fits standard AR-15 magazine wells, so compatibility is excellent across most .450 Bushmaster builds. That said, some rifles may have minor feeding characteristics unique to their specific barrel or upper. If you've had feeding issues with other magazines, this design addresses the core geometry problems that cause those issues.
| UPC | 766897411830 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 5X45041175CPD |
| Caliber/Gauge | .450 Bushmaster |
| Capacity | 5 |
| Color | Black |
| Length | 7.6000 |
| Model | |
| Model Fit | AR-15 |
| Product Type | Magazine |
| Quantity | 1 |
| Shipping Weight | 0.345 |
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