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

Tristar APOC 01
Tristar APOC 01

The TriStar Arms APOC: Familiar & Affordable

Glock-inspired handgun designs have become one of the most popular corners of the firearm market, and TriStar Arms is the latest to throw its hat into the ring with the affordable APOC.

Preview: Linos Sheathworks Custom Kydex Knife Sheaths

Shown here with a TOPS Apache Falcon knife, Linos Sheathworks’ custom Kydex sheaths are available to fit a wide variety of popular fixed-blade and folding knife models from other major brands—all without the need to ship the host knife to the company.

Gun Of The Week: Ruger LCP MAX Manual Safety

Ruger introduced its LCP MAX in 2021, but in recent years, the company has expanded the line with new models, including this two-tone version equipped with a manual thumb safety.

The Armed Citizen® Nov. 28, 2025

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

15 Great Holiday Gifts For Gun Owners

Looking for the perfect Christmas gift for the gun guy or gun girl in your life? Here are a few great options from folks in the know.

October Gun Sales Numbers Signals New Normal?

Estimated gun sales numbers reported from the month of October give us a few clues as to the state of the firearm industry and the community of gun owners at large.

Interests



Get the best of American Rifleman delivered to your inbox.