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

Springfield New Coas 01
Springfield New Coas 01

Making the A-Cut: Springfield Armory's COA-Ready Operator, TRP & DS Prodigy Pistols

Springfield has already released a COA-ready version of its Echelon earlier this year, and the new models will bring the A-Cut to the company’s hammer-fired handguns, including the 1911 Operator, 1911 TRP and 1911 DS Prodigy.

Skills Check: Snake-Eyes Drill

Our drill this month trains you to form a stable firing platform early enough to gain optimal control before the shot breaks. Timing is of the essence.

A Memorial Day Conversation With Grey Team

Grey Team was founded to help armed services members and veterans with the physiological impacts traumatic brain injuries, post-traumatic stress disorder, chronic pain and more.

42 New Handguns for 2026

Within the entire firearm marketplace, handguns continue to be some of the most popular offerings, and for good reason.

The Armed Citizen® May 25, 2026

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

President’s Column | Hope Is Not a Strategy

It was great meeting so many enthusiastic and supportive NRA members at the NRA Annual Meeting in Houston. Your words of encouragement and suggestions are propelling your NRA 2.0 forward.

Interests



Get the best of American Rifleman delivered to your inbox.