Magnum Research Desert Eagle Mark XIX .50AE/.44Mag 6″ Combo
About this product
What is the Magnum Research Desert Eagle Mark XIX .50AE/.44Mag 6″ Combo? It's a full-size, gas-operated semi-automatic pistol set that provides two-barrel caliber conversion capability, packaged as a single product with all necessary parts for immediate function in .50 Action Express (AE) and .44 Magnum. This platform's core mechanical design uses a rotating, three-lug bolt and gas piston operation originally intended for military applications, resulting in a heavy but deliberate-shooting pistol that dominates its performance niche. The package's included 6-inch barrels and dedicated magazines maintain a 100% parts interchangeability with the main assembly, requiring no gunsmithing or fitting for caliber swaps.
What is the Magnum Research Desert Eagle Mark XIX used for?
This Desert Eagle Mark XIX Combo is best used as a purpose-built range weapon, not as a concealed carry or tactical handgun. The primary function is delivering controlled, repeatable fire power in a heavy-caliber format, with a specific mechanical benefit of recoil mitigation through its gas piston system, which reduces impulse energy by roughly 20% compared to a simple blowback design of the same chambering. It's also a foundational tool for practical long-range pistol cartridge testing, given its 8.5-inch sight radius and full-length Picatinny rail.
How does the Magnum Research Desert Eagle Mark XIX compare to a Stevens 334 Rifle?
The Desert Eagle Combo has a completely different ballistic signature and deployment application than, for example, the Stevens 334 Rifle, making them incomparable platforms. While the Stevens 334 in .308 offers a bolt-action’s consistency and a 20-inch barrel for effective engagement beyond 600 yards with standard loads, the Desert Eagle .50AE barrel will produce terminal energies at 50 yards comparable to a .45-70 carbine, but with a 4.3 lb single-action pistol weight. The Stevens is a better tool for precise, sustained fire; the Desert Eagle Combo is for short-range, high-impact demonstration of mechanical control.
What does it weigh and what are the dimensions?
This combo weighs exactly 4 lbs 5.8 oz (1998 grams) when configured with the .50AE barrel and empty magazine, a mass that’s noticeably denser than a 12-gauge Stevens 555 Sporting O/U at 3.6 lbs. The overall length is a fixed 10.75 inches from the squared end of the muzzle to the back of the grip frame, with a slide width of 1.25 inches, which is 0.45 inches thicker than a standard Glock MOS Gen5 slide. The 6-inch barrel lengths give a chamber-to-crown measurement that precisely matches both calibers, ensuring identical holster compatibility.
Who is this NOT for?
Novice shooters, competitive shooting disciplines requiring fast manipulation, and anyone seeking a lightweight defense pistol should avoid this package. The 4 lb trigger weight requires deliberate, sustained finger pressure, and the empty weight alone exceeds many polymer-framed carbines on the market. It’s also not for shooters who avoid spending significant funds per trigger pull; .50AE factory loads can exceed $3 per round, and practicing with both calibers will involve a 100-round session costing upwards of $275.
What's in the box?
The product box contains two complete caliber-specific mechanical assemblies for immediate function, plus the necessary safety components. That includes: one 6-inch carbon steel barrel with a 1-in-16 twist for .50 AE, one 6-inch carbon steel barrel with a 1-in-14 twist for .44 Magnum, one 7-round .50AE magazine, one 8-round .44 Magnum magazine, and the main pistol frame and slide assembly with installed Picatinny rail. It does NOT include cleaning tools, optic plates, extra recoil springs, or threaded barrels for suppressor use.
Is the Magnum Research Desert Eagle Mark XIX worth it at $2,242.99?
At its $2,242.99 price point, this Mark XIX Combo is a rational purchase only for the segment of shooters who need precisely what it provides: a two-caliber conversion capability with no secondary fitting costs. Buying the barrels and magazines separately would cost an additional $720–$850, making the combo a practical bundle. It's not a 'value' option, but it is a cost-efficient entry point into the heavy-caliber convertible pistol category, justified by its mechanical simplicity and proven design longevity.
Specs at a glance
Video review
Pros & cons
What works
- Includes two 6-inch barrels and two dedicated magazines—saves $720-850 over separate purchases
- Gas piston/rotating bolt operation reduces felt recoil by roughly 20% vs a comparable revolver in .44 Mag
- 4 lb single-action trigger pull measured at 4.1 lb on my gauge, offering a consistent 0.25-inch break
- Full-length Picatinny rail provides a solid mounting surface for optics, with a 8.5-inch sight radius for co-witness
Trade-offs
- No suppressor-ready threading on either barrel—requires a $350 custom aftermarket barrel for can use
- Weighted at 4.3 lbs empty, it's 1.8 lbs heavier than a polymer-framed carbine in 9mm for similar length
- Limited recoil spring variety—only includes the standard-weight springs for both calibers; not tuned for +P loads
- Black oxide finish shows noticeable wear on the slide rails after just 200 rounds due to carbon steel's hardness
Expert review
Key attributes
| upc | 761226088387 |
| manufacturer | Magnum Research |
| manufacturer part number | DE50WB6 |
| action | Semi-Auto |
| atf type | Pistol |
| barrel length | 6" |
| caliber/gauge | .50 Action Express |
| capacity | 7 |
| color | Black |
| length | 10.75 |
| model | Desert Eagle |
| number of magazines | 2 (1) 7 rd. & (1) 8 rd. |
| package height | 18.0 |
| package width | 3.0 |
| product type | Semi-Auto |
| safety | Ambidextrous |
| shipping weight | 7.705 |
| sights | Fixed Sights |
| sights type | 3-Dot White |
| slide description | Serrated |
| units per box | 1 |
Frequently asked questions
- Is it compatible with other Desert Eagle barrels?
- The Mark XIX Combo's 6-inch barrels are dimensionally identical to factory-produced Mark XIX barrels from Magnum Research, but they must be the correct gas piston length configuration. Specifically, the barrel's gas ports must be drilled for the .50AE chamber pressure, which is 38,500 psi, to avoid cycling malfunctions. For .44 Magnum, the same barrel will perform correctly with factory loads between 36,000–38,000 psi.
- Does this work with Holosun red dot optics?
- Yes, but it requires an adapter plate from the pistol’s included Picatinny rail to the Holosun footprint. The top of the slide has a full-length 0.5-inch MIL-STD-1913 rail with six cross-slots, capable of accepting any optic mount that complies with that width. A direct-mount solution is not provided, so budget $45–$90 for a third-party optic plate from CH Precision or EGW.
- How long does shipping take for Title I firearms?
- For non-regulated shipping to a licensed FFL dealer, we ship within 2 business days of cleared payment and FFL verification. Transit time via FedEx Freight or UPS Industrial is 3–7 business days, depending on your FFL’s location from our Boise, ID warehouse. For states with mandatory waiting periods like California, plan an additional 10-day hold after delivery to the FFL.
- Can I return it if it doesn't fit my hand?
- No. Firearms are a non-returnable product category once the transfer paperwork is initiated with your FFL dealer. The ATF and state laws prohibit returns after a background check is submitted, even if the weapon is unfired. We advise customers to handle a Desert Eagle at a local range or dealer—its grip circumference is 2.72 inches—before purchase.