Availability: In Stock
Building an AR-15 around 450 Bushmaster means accepting a fundamental mismatch: you're feeding a straight-walled, large-diameter cartridge into a magazine designed for smaller, tapered rifle rounds. Most shooters patch this problem with workarounds—modified followers, aftermarket springs, improvised solutions—that buy you a few range sessions before the magazine starts deforming under the unique stresses of the load. The DuraMag SS 7-Round 450 Bushmaster AR-15 Magazine solves it differently. This isn't a retrofit or compromise; it's a magazine engineered from the ground up specifically for 450 Bushmaster, built to feed reliably in a standard AR-15 magazine well without requiring any modifications to your rifle.
The core innovation is DuraMag's proprietary internal bracing system, laser-welded into a 410 stainless-steel body. This architecture controls how rounds stack and prevents the misalignment that kills reliability when cartridges try to double-stack in a confined space. The result is a magazine that handles the distinctive geometry and pressures of 450 Bushmaster without progressive wear. Field testing and third-party validation confirm these magazines maintain the same feeding reliability after thousands of rounds as they do on the first shot—something cheaper alternatives simply can't deliver.
If you're running a 450 Bushmaster AR-15 build for hunting or testing the cartridge's capabilities at the range, you need magazines that won't be the weak link. DuraMag's 7-round capacity fits standard AR-15 magazine wells, and the stainless-steel construction resists corrosion in the field. This is the magazine that proves 450 Bushmaster feeding problems are a design issue, not a cartridge issue.
| Capacity | 7 rounds |
| Caliber | 450 Bushmaster |
| Material | 410 stainless steel |
| Finish | Black stainless steel |
| Compatibility | AR-15 magazine well |
Yes. The magazine is designed to fit into a standard AR-15 magazine well. It requires no modifications to your rifle; it works as a drop-in replacement.
450 Bushmaster uses a straight-walled, large-diameter cartridge that doesn't follow the geometry of tapered rifle rounds. Standard AR-15 magazines cause misalignment and stacking issues that lead to feeding failures and premature magazine wear. DuraMag's internal bracing system was developed specifically to handle the unique shape and stresses of 450 Bushmaster rounds.
This DuraMag magazine holds 7 rounds of 450 Bushmaster.
Those are temporary fixes that typically fail after 10–20 cycles due to deformation under the stresses of 450 Bushmaster. DuraMag's laser-welded stainless-steel bracing system is engineered to last through thousands of rounds while maintaining the same feeding reliability from the first shot forward.
SKU: 115687641 • Width: 4.6in • Height: 1in • Depth: 8in • Weight: 0.31oz
Availability: In Stock
Building an AR-15 around 450 Bushmaster means accepting a fundamental mismatch: you're feeding a straight-walled, large-diameter cartridge into a magazine designed for smaller, tapered rifle rounds. Most shooters patch this problem with workarounds—modified followers, aftermarket springs, improvised solutions—that buy you a few range sessions before the magazine starts deforming under the unique stresses of the load. The DuraMag SS 7-Round 450 Bushmaster AR-15 Magazine solves it differently. This isn't a retrofit or compromise; it's a magazine engineered from the ground up specifically for 450 Bushmaster, built to feed reliably in a standard AR-15 magazine well without requiring any modifications to your rifle.
The core innovation is DuraMag's proprietary internal bracing system, laser-welded into a 410 stainless-steel body. This architecture controls how rounds stack and prevents the misalignment that kills reliability when cartridges try to double-stack in a confined space. The result is a magazine that handles the distinctive geometry and pressures of 450 Bushmaster without progressive wear. Field testing and third-party validation confirm these magazines maintain the same feeding reliability after thousands of rounds as they do on the first shot—something cheaper alternatives simply can't deliver.
If you're running a 450 Bushmaster AR-15 build for hunting or testing the cartridge's capabilities at the range, you need magazines that won't be the weak link. DuraMag's 7-round capacity fits standard AR-15 magazine wells, and the stainless-steel construction resists corrosion in the field. This is the magazine that proves 450 Bushmaster feeding problems are a design issue, not a cartridge issue.
| Capacity | 7 rounds |
| Caliber | 450 Bushmaster |
| Material | 410 stainless steel |
| Finish | Black stainless steel |
| Compatibility | AR-15 magazine well |
Yes. The magazine is designed to fit into a standard AR-15 magazine well. It requires no modifications to your rifle; it works as a drop-in replacement.
450 Bushmaster uses a straight-walled, large-diameter cartridge that doesn't follow the geometry of tapered rifle rounds. Standard AR-15 magazines cause misalignment and stacking issues that lead to feeding failures and premature magazine wear. DuraMag's internal bracing system was developed specifically to handle the unique shape and stresses of 450 Bushmaster rounds.
This DuraMag magazine holds 7 rounds of 450 Bushmaster.
Those are temporary fixes that typically fail after 10–20 cycles due to deformation under the stresses of 450 Bushmaster. DuraMag's laser-welded stainless-steel bracing system is engineered to last through thousands of rounds while maintaining the same feeding reliability from the first shot forward.
SKU: 115687641 • Width: 4.6in • Height: 1in • Depth: 8in • Weight: 0.31oz