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

Colt’s 1849 London Pocket
Colt’s 1849 London Pocket

I Have This Old Gun: Colt’s 1849 London Pocket

Encouraged by his generally positive reception at the Great Exhibition in 1851, and always anxious to gain elusive government contracts, Colt, in 1853, opened a London factory where he would make a number of revolvers, including his popular 1849 Pocket Model.

Modern Cowboy Gun: The Savage Arms Revel Tactical

Savage Arms jumped back into the lever-action market in 2024 with its rimfire Revel platform, and this year, the company is expanding with a feature-rich Revel Tactical model.

Hunting with a Legend: Sierra’s MatchKing X Bullet

Sierra’s MatchKing is a highly respected target bullet, but for the new trend of long-range hunting, the design needed to offer improved terminal performance. Enter the MatchKing X.

The Armed Citizen® Oct. 19, 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.

Review: Stoeger STR-9 Thinline

The new Stoeger carry gun loses nothing—except some weight and girth. This is the Stoeger STR-9 Thinline.

5 Great Products for Your Next Hunt

These five products will help boost your chances at success in the field.

Interests



Get the best of American Rifleman delivered to your inbox.