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IA Iron River Armory

Colt LE6940 Monolithic Carbine 5.56 16.1in

SKUKIN|1214722 Conditionnew CategoryAR Rifles
$1536.44
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About this product

The Colt LE6940 is a one-piece monolithic AR-style carbine built around a free-floating 16.1-inch chrome-lined barrel and a continuous Mil-Spec top rail that runs from the rear of the receiver to the front sight. It ships in a matte black finish with Magpul MBUS rear sight and a folding front sight for enhanced optical clearance. The quad-rail handguard and full-length top rail provide repeatable mounting points for optics and accessories.

Key Specifications

  • Caliber: .223 Rem / 5.56 NATO.
  • Action: Semi-Automatic.
  • Barrel length: 16.1 inches with a chrome-lined bore.
  • Rate of twist: 1:7 right-hand.
  • Receiver material: 7075 T6 Aluminum with an anodized finish.
  • Weight: 6.8 lbs (manufacturer listing).
  • Overall length: 32 to 35.5 inches (adjustable stock).
  • Sights: Magpul MBUS flip-up rear with a folding front sight.
  • Stock: 4-position synthetic collapsible stock in black.
  • Muzzle: A2 flash hider.

Designed for repeatable optic mounting and broad accessory compatibility, the LE6940 pairs a robust monolithic upper with modular handguard rails and Magpul furniture. Its 16.1-inch chrome-lined barrel and 1:7 twist accommodate a wide range of common 5.56/.223 loads while the full-length rail and quad-rail sections support lights, lasers, grips, and optics in configurations suited to duty, competition, or general range use.

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Specs at a glance

Colt LE6940 Monolithic Carb… SPECS AT A GLANCE 6.8 lbs WEIGHT 16.1 inches SIZE
Editorial diagram — measurements verified during testing.
Sources & methodology. Editorial review and rating by Travis Caldwell based on hands-on testing notes and published vendor specifications. Pricing verified at time of publication.
$1536.44