Magnum Research 429 DE Mark XIX Pistol Now Shipping

by
posted on November 21, 2018
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

KelTec PR57 black gun pistol left-side view on white background
KelTec PR57 black gun pistol left-side view on white background

6 New Handguns For 2025

Several of the nation's biggest names in firearm manufacturing have released new models ahead of SHOT Show 2025. Here's a rundown of the features that each of them offer.

Boys To Riflemen: Aiken’s Volunteers During The British Attack on Plattsburgh

In September 1814, Americans once again stood against the might of the British military, as their forefathers had done during the Revolution. A small group of teen boys proved their valor in the face of a British attack and earned a special presentation rifle for their efforts.

The Armed Citizen® Jan. 20, 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.

A Gas-Operated M1903 Conversion That Never Was

The U.S. government's never-ending quest for a more effective shoulder-fired arm to equip its military has, naturally, resulted in more prototypes than production models. This semi-automatic Model 1903 Springfield conversion was one such dead-end.

Preview: Burris BTS35 v3

The author joined industry professionals for a coyote hunt that went well into the evening hours using thermal imaging from Burris. Read field notes from that hunt using the BTS35 v3.

Review: LWRCI IC-9 Carbine

This delayed-blowback 9 mm carbine has a few tricks up its sleeve that you won't find on other guns in this class.

Interests



Get the best of American Rifleman delivered to your inbox.