Double Stack 1911? Four New Models from Cosaint Arms

1911s are admired and favored not only for their rich history but, often, for their multiple built-in safety features. The one thing the typical 1911 lacks is capacity, and that’s where Cosaint Arms comes in. The gunmaker has expanded their double-stack 1911 line to include Commander and Government models in various colors and calibers. The new guns are being sold under the COS21 line, which is an offshoot of their popular COS11 Single-Stack line of pistols.

The Cosaint Arms Commander is now available as a double-stack. (Photo credit: Cosaint Arms)

The Cosaint Arms COS21 line now includes Commander-sized 1911s chambered in 9mm, 45 ACP, and 10mm and Government-sized 1911s chambered in 9mm, 45 ACP, 40 Smith and Wesson, and 10mm. The range of caliber options gives gun owners the chance to go outside the classic 45 ACP chambering, should they so desire. In addition, because grip width is a frequent complaint when comparing traditional single-stacks to double-stacks, the manufacturer thinned the grips on their COS21s to more comfortably fit the shooter’s hands. According to the gunmaker, their double-stacks are made for comfort and ease of use even at higher round counts.

Features include a squared trigger guard, forward and rearward slide serrations, and a custom stippled grip. The guns also have flared magwells for smoother reloads. The magwell is removable if the shooter prefers a more streamlined look for concealed carry or personal preference.

Cosaint Arms COS21 double stack 1911
The new guns from Cosaint Arms are available in a variety of calibers and colors. (Photo credit: Cosaint Arms)

Cosaint Arms Double Stack 1911 Features

  • The thinned out grip retains its strength and durability
  • Designed for serious use
  • New, rounded cocking serrations lack sharp edges for more comfortable manipulation
  • Tactical hard coat anodized alloy frame for resistance to wear and tear
  • Full-size custom stippled polymer grip textured for superior control even with sweaty hands
  • Grip texture designed for functionality and comfort; company states hands won’t be raw even with high round-count days
  • Fixed ledge blacked-out notch rear sight for greater contrast with fiber optic front sight
  • Commander is 34.5 ounces, empty weight, no magazine. Government is 38.4 ounces, empty, no magazine.
  • Ships with 2 MBX Extreme 126mm magazines
  • Cerakoted in Tungsten and Black
  • Commander model available in 9mm, 45 ACP, and 10mm; Government model available in 9mm, 45 ACP, 40 Smith and Wesson, and 10mm; Officer model available in 9mm
Cosaint Government Double stack 1911
Increased capacity in a 1911 platform is always welcome for concealed carry. (Photo credit: Cosaint Arms)

Features of Each Model

COS-21 Government

  • 5.0 inch Bull Barrel
  • Factory 3.5 lbs trigger pull
  • Ambi-Safety
  • Competition Adjustable (Bomar) Rear and Fiber Optic Front Sights
  • Ships with two MBX 20+1 mags
  • Length: 8.5 inches
  • Width: 1.375 inches
  • Height: 5.5 inches
  • Weight: 38.4 ounces, empty (without magazine)
  • Available calibers include 9mm, 45 ACP. 40 S&W and 10mm
  • MSRP: $2300

COS-21 Commander

  • 4.25 inch Bull Barrel
  • Factory 3.5 lbs trigger pull
  • Fixed Ledge Rear and Fiber Optic Front Sights
  • Ships with two MBX 20+1 mags
  • Length: 8.0 inches
  • Width: 1.375 inches
  • Height: 5.5 inches
  • Weight: 34.5 ounces, empty (without magazine)
  • Available calibers include 9mm, 45 ACP, and 10mm
  • MSRP: $2200
COS21 double stack 1911
To learn more about this new double stack 1911 line from Cosaint Arms, visit https://cosaintarms.com/cos21-products/

Kat Ainsworth Stevens is a long-time outdoor writer, official OGC (Original Gun Cognoscenti), and author of Handgun Hunting: a Comprehensive Guide to Choosing and Using the Right Firearms for Big and Small Game. Der Teufel Katze has written for a number of industry publications (print and online) and edited some of the others, so chances are you’ve seen or read her work before, somewhere. A woman of eclectic background and habits, Kat has been carrying concealed for over two decades, used to be a farrier, and worked for a long time in emergency veterinary medicine. She prefers big bores, enjoys K9 Search & Rescue, and has a Master’s Degree in Pitiless Snarkastic Delivery.