Colt LE M4 5.56mm Commando CQB Monolithic SBR, 11.5" Barrel, Black

Overview

The Colt 11.5” CQB Monolithic Short Barreled Rifle is a compact, mission-focused 5.56mm carbine engineered for close-quarters battle and tactical operations. Built around Colt’s fully unitized URG one-piece upper, this CQB platform provides a free-floated barrel, uninterrupted full-length rail, and the proven performance of an 11.5” chrome-lined M4 contour barrel with A2 flash hider. Lightweight, highly maneuverable, and optimized for rapid target acquisition, the LE6943 is a modern evolution of the Commando/Mk18 lineage.

Key Features

• Monolithic one-piece upper: Unitized URG design for a rigid, free-floated barrel and uninterrupted full-length rail.
• Compact CQB barrel: 11.5” chrome-lined M4 contour barrel, 1:7” twist, offering full 5.56mm performance in a small package.
• Direct gas operating system: Eliminates the conventional operating rod for fewer, lighter components and reliable function.
• Full quad-rail: Accepts standard rail covers and accessories (Knights, TangoDown, Daniel Defense, LMT compatible).
• Iron sights & mounts: Gas-block mounted front flip sight with bayonet lug and Magpul or folding rear sight; flat-top receiver for optics.
• Mil-spec construction: High-strength materials and Mil-Spec components for durability in harsh conditions.
• Tactical ergonomics: Designed for rapid deployment, maneuverability, and sustained operational use in confined spaces.

Specifications

• Model: Colt LE6943CQB / CR6943 Monolithic Short Barreled Rifle
• Caliber: 5.56mm (.223 Rem / 5.56 NATO)
• Barrel Length: 11.5” (chrome-lined M4 contour)
• Twist Rate: 1:7” RH
• Operating System: Direct gas operated (Colt direct gas system)
• Receiver: Flat-top, unitized upper (monolithic URG) with full-length rail
• Handguard / Rail: Full quad-rail (accepts common rail covers & accessories)
• Sights: Gas-block front flip sight with bayonet lug; Magpul folding rear sight
• Flash Hider: A2-style flash hider
• Overall Length: Stock extended: ~30.75”; Stock retracted: ~27.5” (model dependent)
• Stock: 4-position buffer extension tube with mil-spec M4 buttstock (P&S manufactured)
• Bolt Carrier: Complete M4 full-auto BCG included
• Charging Handle: Colt mil-spec charging handle included
• Magazine: No magazine included — accepts any mil-spec magazines of any capacity

Package Contents

• Colt LE/CR 6943 Monolithic Short Barreled Rifle (per model designation)
• Complete M4 full-auto bolt carrier assembly
• Colt carbine lower receiver
• Colt mil-spec charging handle
• Magpul backup rear sight (or equivalent per package photos)
• Folding front sight (gas-block mounted)
• Colt 4-position buffer extension tube
• Colt mil-spec M4 “waffle” buttstock (P&S Products manufactured; branding may vary)

Applications

• Law enforcement and tactical teams requiring maximum firepower and maneuverability in confined spaces.
• Close-quarters battle (CQB), entry teams, vehicle operations, and rapid-response scenarios.
• Civilian use where legal and compliant — compact defensive rifle or short-range engagement platform.

Notes & Compliance

• This model is a Short Barreled Rifle (SBR) configuration in many jurisdictions when shipped with a barrel under 16”. NFA rules and applicable federal/state/local regulations may apply. Confirm legality and required paperwork (NFA tax stamp/registration) before purchase.

Care & Maintenance

• Follow Colt’s recommended maintenance schedule: clean bore and gas system after use, inspect rails and sight mounts, and lubricate moving parts with quality firearm lubricant.
• Use mil-spec magazines and components to ensure reliable function.
• Store unloaded in a secure, climate-controlled location and comply with all applicable storage laws.