Cosaint Arms COS21 Commander Optics-Ready .45 ACP – 14+1 Double-Stack with Cheely Grip & 4" Bull Barrel
This COS21 Commander Optics-Ready from Cosaint Arms is a compact, 2011-style pistol chambered in .45 ACP with a 14+1 double-stack capacity. Hand-built in small batches of roughly 300 units per year and carrying an MSRP of $3,750, it features a factory optic cut, Cheely L2 aluminum grip module, and a ramped stainless bull barrel. Its limited production and sought-after configuration make it a hard-to-find option for shooters who want modern performance in a commander-length package.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent – Clean, mirror finish, no signs of wear.
Bore Rifling: Good Rifling – Intact, well-defined lands and grooves.
Specific Condition Notes: The pistol displays evidence of regular firing, with minor dings along some edges and visible wear on the chamber face and feed ramp.
What's Included
- Cosaint Arms-branded MTM Case-Gard plastic hard case
- Cosaint Arms Safety Reference & Owner's Manual
- One MBX stainless 14-round double-stack .45 ACP magazine
Built on a 1911 platform but engineered as a double-stack 2011, the COS21 offers 14-round capacity without sacrificing the familiar single-action trigger system. The flat-faced, skeletonized trigger breaks crisply at under 4 lb, while the skeletonized ring hammer and extended beavertail grip safety support fast, confident manipulations.
The 4" ramped stainless bull barrel is paired with a slide that wears both forward and rear cocking serrations, plus lightening slots that trim reciprocating mass for smoother cycling. An optic cut with a four-screw cover plate accepts C&H Precision plates, letting you mount today’s miniature red-dots with minimal additional work.
Cosaint’s choice of the Cheely L2 aluminum grip module adds an integral steel magwell for quicker reloads and aggressive texturing that stays controllable even during high-round-count sessions. The red fiber-optic front sight gives an immediate, daylight-bright aiming reference when shooting iron sights.
Made in the USA, each COS21 is hand-fit and test-fired, contributing to its reputation for reliability out of the box. Compatibility with widely available MBX double-stack magazines provides convenient support for both range and carry use.