
Availability: In Stock
The DuraMag 5-round 450 Bushmaster AR-15 magazine solves a real problem that standard AR magazines were never built to handle: reliably feeding the straight-walled, high-capacity rounds of the .450 Bushmaster cartridge. Unlike bandaid solutions that rely on aftermarket followers or springs, DuraMag engineered this magazine from scratch specifically for the geometry and feeding demands of big-bore straight-walled rounds in the AR platform. If you're running .450 Bushmaster and tired of feed issues and short magazine lifespan, this is the fix.
The engineering here matters. DuraMag built a proprietary internal bracing system laser-welded into a 410 stainless-steel body that controls round stack and prevents the misalignment that causes double-feeds and failures. That geometry precision is what separates this from the home-remedies and magazine deformations (typical failure after 10–20 cycles) that plagued earlier workarounds. Third-party testing by firearms manufacturers confirms the design: thousands of rounds through a single magazine with reliability that doesn't degrade. Round one feeds as cleanly as round five thousand.
Built for hunters and shooters who've committed to the .450 Bushmaster as their AR cartridge and demand a magazine that won't be the weak link in the chain. The 5-round capacity fits standard AR magazine wells and gives you the capacity and reliability your rifle deserves.
| Caliber | .450 Bushmaster |
| Capacity | 5 rounds |
| Platform | AR-15 |
| Material | 410 stainless steel |
| Follower | Black |
| Construction | Laser-welded with proprietary internal bracing |
Yes. The DuraMag 450 Bushmaster magazine is designed to fit standard AR-15 magazine wells.
Standard AR magazines were designed for tapered, smaller cartridges. The .450 Bushmaster's straight-walled geometry causes feeding issues, double-feeds, and premature magazine deformation in unmodified AR magazines. DuraMag's proprietary internal bracing system and optimized geometry prevent these failures, delivering reliable feeding across thousands of rounds.
This is a 5-round magazine.
The magazine is built from 410 stainless steel, which provides corrosion resistance. The black follower is also integrated into the design.


SKU: 115792072 • Width: 2.6in • Height: 1.2in • Depth: 4.5in • Weight: 0.38oz
Availability: In Stock
The DuraMag 5-round 450 Bushmaster AR-15 magazine solves a real problem that standard AR magazines were never built to handle: reliably feeding the straight-walled, high-capacity rounds of the .450 Bushmaster cartridge. Unlike bandaid solutions that rely on aftermarket followers or springs, DuraMag engineered this magazine from scratch specifically for the geometry and feeding demands of big-bore straight-walled rounds in the AR platform. If you're running .450 Bushmaster and tired of feed issues and short magazine lifespan, this is the fix.
The engineering here matters. DuraMag built a proprietary internal bracing system laser-welded into a 410 stainless-steel body that controls round stack and prevents the misalignment that causes double-feeds and failures. That geometry precision is what separates this from the home-remedies and magazine deformations (typical failure after 10–20 cycles) that plagued earlier workarounds. Third-party testing by firearms manufacturers confirms the design: thousands of rounds through a single magazine with reliability that doesn't degrade. Round one feeds as cleanly as round five thousand.
Built for hunters and shooters who've committed to the .450 Bushmaster as their AR cartridge and demand a magazine that won't be the weak link in the chain. The 5-round capacity fits standard AR magazine wells and gives you the capacity and reliability your rifle deserves.
| Caliber | .450 Bushmaster |
| Capacity | 5 rounds |
| Platform | AR-15 |
| Material | 410 stainless steel |
| Follower | Black |
| Construction | Laser-welded with proprietary internal bracing |
Yes. The DuraMag 450 Bushmaster magazine is designed to fit standard AR-15 magazine wells.
Standard AR magazines were designed for tapered, smaller cartridges. The .450 Bushmaster's straight-walled geometry causes feeding issues, double-feeds, and premature magazine deformation in unmodified AR magazines. DuraMag's proprietary internal bracing system and optimized geometry prevent these failures, delivering reliable feeding across thousands of rounds.
This is a 5-round magazine.
The magazine is built from 410 stainless steel, which provides corrosion resistance. The black follower is also integrated into the design.
SKU: 115792072 • Width: 2.6in • Height: 1.2in • Depth: 4.5in • Weight: 0.38oz

