Editor’s Choice: Rock River Arms MRK 20

by
posted on April 19, 2020
** 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. **
mrk20.jpg

Rock River Arms, best known for its M1911s and AR-style rifles, is now in the semi-automatic striker-fired pistol business with its MRK 20 (pronounced Mark 20), a gun that takes some stylistic cues from Glock but has an anodized 7000-series aluminum frame with well-textured grip surfaces.

Rock River Arms' choice to go with an aluminum frame instead of the polymer grip frame often used for this style of gun means that there are some added benefits for the end user. Metal-frame pistols are more durable than polymer-frame pistols, allowing them to stand up to greater abuse.

Additionally, the hardened surface of the aluminum frame means that it can take different texturing patterns that aren't possible with a molded polymer frame, and Rock River Arms took advantage of that fact in the development of the MRK 20 by adding a unique, dimpled texture to the grip. The material also easily accepts durable finishes like Cerakote.

The gun, which has a grip angle more akin to an M1911, is 5" high and 7.25" in overall length. It comes with a threaded 4.5" stainless steel barrel with a 1:16" RH twist. Magazine capacity is 15 rounds, and its width is 1.35".

The stainless steel slide is nitrided with a black finish, and it comes out of the box optics-ready. While the MSRP of the new pistol is still to be determined, initial discussion suggested a price point of around $850.

Additionally, Rock River Arms has not indicated when the pistol will be available to consumers. Interested enthusiasts can keep an eye on
rockriverarms.com for the latest information.

Latest

Gotw Walther Fseries Prox Pmm 1
Gotw Walther Fseries Prox Pmm 1

Gun of the Week: Walther Arms PDP F-Series Pro-X PMM

One of Walther Arms' recent introductions combines the features of several other PDP handguns, meaning the Walther PDP F-Series Pro-X PMM is packed with a number of different design elements.

The Armed Citizen® Oct. 30, 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 | Your Input is Valued

I wish to thank all our members who have sent me e-mails these last 12 months. I’m doing my best to keep up with all your e-mails, but please be aware it seems I’m always 300 to 400 e-mails behind. I want to reiterate that I am reading them all as fast as I have time for.

Building an X-Card Gun for Turkey Shoots

Unofficially known as a “turkey shoot,” X-Card competition challenges shotgunners to place shot pellets as closely as possible to the center of a target. And some makers have perfected a way to fine-tune shotguns for this purpose.

Spanish National Police Adopt Springfield Armory Echelon 4.0FC

The Spanish National Police (Policia Nacional) has officially adopted the Springfield Armory Echelon 4.0FC 9mm pistol as the issue pistol for its uniformed officers.

NRA Launches New NRA.org Platform and Official App to Modernize and Enhance the Member Experience

The National Rifle Association today launched its new NRA.org website and continued enhancements to the official NRA App, marking a major step and significant investment to modernize the organization and better serve members.

Interests



Get the best of American Rifleman delivered to your inbox.