New For 2021: Cosaint Arms COS21

by
posted on July 10, 2021
** 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. **
Cosaint21

Cosaint Arms, an American pistol manufacturer headquartered in Flat Rock, NC, announced it will offer a double-stack, Commander-size variant of John Browning’s M1911 pistol chambered for 9 mm Luger. The new COS21 from Cosaint Arms is a hybrid 1911 that features the company’s modular system.

The synthetic material used to manufacture the grip frame of the COS21 pistol provides a lighter-weight design with increased ammunition capacity. Consaint Arms partnered with MBX for its American-made 126 mm magazine with capacity for 20 rounds of 9 mm Luger. Two magazines are included with each COS21 pistol.

Cosaint Arms relies on anodized 7075 aluminum for its frame assembly that is the foundation for the gun’s slide and grip frame. In addition, the aluminum frame supplies a Picatinny rail for accessories. The grip frame features a stippled grip for enhanced purchase, and a trigger guard with texturing on its front face comes standard. Cosaint Arms supplies a single, left-side safety lever and extended magazine release actuator. An upswept, extended beavertail grip safety with an extended memory bump comes standard, too.

Accuracy for the Commander-length COS21 is aided by a supplied 4.25” bull barrel and fiber-optic pipe dovetailed to the front of the steel slide. A square-notch rear sight comes standard that features a racking ledge for tactical applications. Cerakote Tungsten and Black finish is supplied to add longevity by providing added corrosion resistance.

MSRP for the COS21 9 mm pistol is set for $2,000. To learn more about the COS21 double-stack 1911, please visit cosaintarms.com.

Latest

Steiner Predator: 4S 4-16X 44 mm
Steiner Predator: 4S 4-16X 44 mm

Review: Steiner Predator: 4S 4-16X 44 mm

The benefit of a lightweight rifle is lost the moment you top it with a clunky, overweight optic, particularly a lengthy one. To that end, we are starting to see an emphasis on riflescopes that are less cumbersome when mounted, such as Steiner’s Predator 4S.

A Carry-Ready Classic: Outfitting A Ruger Speed-Six Revolver

Already a fan of Ruger’s long-discontinued double-action Security-Six, Police Service-Six and Speed-Six revolvers, I simply couldn’t pass up the opportunity to acquire one of the latter in 9 mm Luger when an unfired, 42-year-old example turned up at a gun show.

Old Glory Bank Sponsors 2025 National Youth Shooting Sports Conference

Old Glory Bank, which provides banking services to NRA-affiliated clubs and associations, served as the presenting sponsor for the National Youth Shooting Sports Conference in October.

Shooters, Listen Up! Take Hearing Health Seriously

When it comes to the five senses, hearing is one of the most susceptible to damage from the shooting sports. Now, the latest electronic technology gives compromised ears a new lease on life—and protects them from further harm.

The Armed Citizen® Nov. 17, 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.

NRA Supports Hunters For The Hungry Programs

In 2025, Hunters for the Hungry programs across the United States will have extra support from the National Rifle Association, thanks to NRA Foundation donors.

Interests



Get the best of American Rifleman delivered to your inbox.