Colt Midlength Carbine 5.56 NATO 16 Inch Semi-Automatic Modern Sporting Rifle – Lightweight AR Platform
The Colt Midlength Carbine 5.56mm NATO 16 Inch Semi-Automatic Rifle is a modern AR-15 style platform built around a mid-length gas system for smoother recoil impulse and improved handling characteristics compared to shorter carbine gas setups.
It focuses on a balance of reliability, controllability, and modularity while keeping weight just under 6 pounds.
Key Features
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Chambered in 5.56mm NATO / .223 Remington
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30+1 round capacity
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16-inch chrome-lined barrel
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Mid-length gas system (Colt carbine family variant)
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M-LOK free-float handguard
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Integrated full-length Picatinny rail (optics-ready)
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6-position adjustable stock
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Anodized matte black finish
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Polymer furniture
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1:7 twist rate barrel
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Semi-automatic AR platform
Mid-Length Gas System Advantage
The mid-length gas system is designed to operate with a longer gas tube than traditional carbine setups. This typically results in:
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Smoother recoil impulse
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Reduced wear on internal components
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Improved shot-to-shot control
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Better overall shooting comfort
This makes the rifle especially appealing for extended range sessions or general-purpose shooting.
Optics-Ready Configuration
Instead of fixed iron sights, this model uses an integrated Picatinny rail system, allowing the user to mount optics directly (red dots, scopes, magnifiers) without obstruction. This reflects a more modern AR configuration focused on optical aiming systems.
Barrel and Performance
The 16-inch chrome-lined barrel enhances durability and corrosion resistance while supporting a broad range of 5.56 NATO ammunition. The 1:7 twist rate stabilizes heavier modern bullet designs effectively.
Ergonomics and Handling
The rifle includes a 6-position adjustable stock for length-of-pull customization. Combined with a lightweight sub-6 lb design, it is intended for fast handling and reduced fatigue during extended use.
The M-LOK handguard allows modular accessory mounting for lights, grips, and bipods without adding unnecessary weight.
Colt Midlength Carbine Specifications
Manufacturer: Colt
Model: Midlength Carbine
Action: Semi-Automatic, Direct Impingement
Caliber: 5.56mm NATO / .223 Remington
Capacity: 30+1 Rounds
Barrel Length: 16 Inches
Barrel Type: Chrome-lined
Gas System: Mid-length
Handguard: M-LOK free-float
Receiver: Aluminum AR-style with Picatinny rail
Stock: 6-position adjustable
Sights: None (optics-ready rail)
Twist Rate: 1:7
Weight: 5.95 lbs
Finish: Matte anodized black
Type: Centerfire
Overall Role
This rifle is best understood as a modernized AR-15 configuration optimized for optics use and smoother recoil characteristics. It is well-suited for general shooting, training, and users who prefer a lightweight, modular platform with contemporary accessory compatibility.




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