Magnum Research 429 DE Mark XIX Pistol Now Shipping

by
posted on November 21, 2018
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
429de.jpg

Magnum Research, which recently announced the new 429 DE cartridge, has announced it is now shipping the Mark XIX pistol and accessories chambered in the new round.

The 429 DE pistol (DE429SRMB) features a stainless steel slide, a stainless steel frame with Picatinny bottom rail, and a 6" stainless steel barrel with integral muzzle brake and black appointments. The pistol ships with a .50AE 7-round magazine and has an MSRP of $2,143.

The 429 DE Mark XIX spare barrels with Picatinny style accessory rails are available in a variety of finishes. The barrels are 6" and are compatible with any MK19 USA or Israel Desert Eagle Pistol with a wide .830” rail on top of the barrel and uses a 50AE magazine and bolt. Barrels will be available in:

Carbon steel with Black finish, MSRP $425 (BAR4296)
Carbon steel with Burnt Bronze Cerakote, MSRP $482 (BAR4296BB)
Carbon steel with Brushed Chrome finish, MSRP $529 (BAR4296BC)
Carbon steel with Polished Chrome finish, MSRP $529 (BAR4296PC)
Stainless steel with integral muzzle brake, MSRP $482 (BAR4296SRMB)

To round out the new 429 DE product lineup, Magnum Research is offering 429 DE ammunition in 20-round boxes:

240-gr. soft point (DEP429DE240JSP) MSRP $42,
210-gr. hollow point (DEP429DE210JHP) MSRP $42

Magnum Research, Inc is the sole supplier of the 429 DE ammunition at this time.

Based on the 50 AE cartridge, the 429 DE is made with Starline brass, loaded by HSM in Montana with Sierra bullets and distributed by Magnum Research, Inc. This cartridge has a 25 percent velocity increase and 45 percent energy increase over a 44 Mag (240 -- 6" barrel). It has a velocity of 1600 fps with 240-gr. bullets and 1750 fps with 210-gr. bullets. The 429 DE features 30 degree shoulder headspaces and a neck long enough to properly hold and crimp a 240 grain bullet without set back under recoil.

Additional Reading:
A First Look at 2019's New Guns  

Latest

Smith Wesson Academy Artv 1
Smith Wesson Academy Artv 1

The Smith & Wesson Academy Reopens

One of the latest expansions at S&W's new Maryville facility is the addition of an entirely new training ground, the new home of the legendary Smith & Wesson Academy.

New for 2026: EAA Balikli BLK Bolt-Action Rifles

This year, EAA Corp. expanded its catalog with a new hunting rifle, the Balikli BLK bolt-action, which has high-end features for its price, as well as compatibility with broad aftermarket.

HOUSTON 2026 | The 155th NRA Annual Meetings & Exhibits

Exuberance was the defining spirit of the 2026 NRA Annual Meetings. More than 73,000 attendees packed the George R. Brown Convention Center in Houston to celebrate 250 years of America, concurrent with 155 years of their NRA.

Shotshell Basics: Understanding Payloads, Pressures & Performance

A shotgun can be supremely versatile, depending on how it’s loaded. Understanding how shotshells work is difficult, but crucial.

Rock River Arms Celebrates 30 Years in Business

While the company's beginnings go back to 1994, the Rock River Arms story officially started in 1996, meaning that it is celebrating 30 years in business in 2026.

Review: Daniel Defense H9

Is the third time the charm? Daniel Defense has introduced a third version of the Hudson H9 pistol. Smaller, lighter and less radical, it could be “the one.”

Interests



Get the best of American Rifleman delivered to your inbox.