Description
Item Description
Bryant Ridge Co. is pleased to present one of the best things that's happened in tactical rifles in a long time for a penny-start auction; this is the "Now Discontinued Colt Modular Carbine (LE901-16SE)!
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The Colt Modular Carbine LE901-16SE is a highly adaptable rifle platform designed to deliver exceptional versatility and performance in both .308 Winchester and 5.56 NATO configurations. Originally built as a robust monolithic upper rifle chambered in .308, the LE901-16SE stands out for its innovative modularity, allowing users to easily convert the rifle to accept standard AR-15 uppers in smaller calibers with the use of Colt’s proprietary magazine well adapter. This unique cross-caliber compatibility, combined with ambidextrous controls, a free-floating quad rail, and rugged construction, makes the LE901-16SE an ideal solution for shooters who want the power of a full-sized battle rifle and the flexibility of a lightweight carbine in a single, streamlined system.
This example of the Colt Modular Carbine LE901-16SE includes not only the original .308 configuration but also comes equipped with a complete 16" 5.56 NATO upper assembly, enhancing its versatility and utility. With Colt’s proprietary magazine well adapter, the rifle can seamlessly switch between calibers, allowing users to go from a powerful .308 battle rifle to a lighter, faster-handling 5.56 NATO carbine in minutes. This dual-caliber capability makes it an excellent all-in-one solution for a variety of shooting needs, from tactical training to hunting and home defense.
These carbines are becoming very desirable as they have been discontinued and are no longer in production.
SPECIFICATIONS:
Manufacturer: Colt
Model: Modular Carbine (LE901-16SE) “Discontinued”
Serial: MCC005206
Caliber: .308 Win (Installed on the Rifle) with an Additional 5.56 NATO Upper Assembly
Finish: Black Anodized
Barrel Length: 16.1" Chrome Lined Barrel with 1/13 Twist & Flash Hider (Installed on the Rifle) with Additional 16" 5.56 Nato Barrel with 1/7 Twist & Flash Hider
Optics/Sights: Locking & Folding Front and Rear Sights with Aperture Rear & Wing Protected A2 Post Front
Stock/Grips: VLTOR Buttstock, A2 Style Pistol Grip, and Monolithic Upper Receiver with a Fixed Rail at the 12 O'Clock Position & Provisions to Mount Rails at the 3, 6, and 9 O'Clock Positions
Action: Semi-Automatic Rifle
Markings: Standard
Bryant Ridge's Analysis:
The Colt Modular Carbine LE901-16SE is a highly versatile rifle platform developed by Colt to meet the evolving demands of modern tactical shooters, law enforcement, and military users. At its core, the LE901 is a monolithic upper receiver design chambered in .308 Winchester (7.62x51mm NATO), providing the power and range of a full-sized battle rifle while maintaining a relatively compact 16.1-inch barrel length. Its direct impingement gas system is paired with a full-length, free-floating quad rail, offering superior accuracy and ample space for accessories. The rifle also features ambidextrous controls—including the magazine release, bolt catch, and safety selector—making it highly user-friendly for both right- and left-handed shooters. The robust lower receiver is built with reinforced components to handle the pressures of .308, and it includes a standard AR-15-style fire control group and buffer tube, allowing the use of a wide range of aftermarket triggers and stocks.
Model: Modular Carbine (LE901-16SE) “Discontinued”
Serial: MCC005206
Caliber: .308 Win (Installed on the Rifle) with an Additional 5.56 NATO Upper Assembly
Finish: Black Anodized
Barrel Length: 16.1" Chrome Lined Barrel with 1/13 Twist & Flash Hider (Installed on the Rifle) with Additional 16" 5.56 Nato Barrel with 1/7 Twist & Flash Hider
Optics/Sights: Locking & Folding Front and Rear Sights with Aperture Rear & Wing Protected A2 Post Front
Stock/Grips: VLTOR Buttstock, A2 Style Pistol Grip, and Monolithic Upper Receiver with a Fixed Rail at the 12 O'Clock Position & Provisions to Mount Rails at the 3, 6, and 9 O'Clock Positions
Action: Semi-Automatic Rifle
Markings: Standard
Bryant Ridge's Analysis:
The Colt Modular Carbine LE901-16SE is a highly versatile rifle platform developed by Colt to meet the evolving demands of modern tactical shooters, law enforcement, and military users. At its core, the LE901 is a monolithic upper receiver design chambered in .308 Winchester (7.62x51mm NATO), providing the power and range of a full-sized battle rifle while maintaining a relatively compact 16.1-inch barrel length. Its direct impingement gas system is paired with a full-length, free-floating quad rail, offering superior accuracy and ample space for accessories. The rifle also features ambidextrous controls—including the magazine release, bolt catch, and safety selector—making it highly user-friendly for both right- and left-handed shooters. The robust lower receiver is built with reinforced components to handle the pressures of .308, and it includes a standard AR-15-style fire control group and buffer tube, allowing the use of a wide range of aftermarket triggers and stocks.
What truly sets the LE901-16SE apart, however, is its modularity. Colt designed this platform with cross-caliber adaptability in mind, allowing users to easily convert the rifle from a .308 to a 5.56 NATO configuration (or any standard AR-15 upper) by utilizing Colt’s proprietary “adapter block” or magazine well conversion insert. This block fits into the larger .308 magazine well, resizing it to accept standard AR-15 magazines and ensuring proper feeding and bolt hold-open functionality. Once installed, the user can simply swap the .308 upper for any standard 5.56mm AR-15 upper, essentially transforming the LE901 into a lightweight carbine with a simple upper and magazine change. This design offers the end-user two rifles in one—a full-power battle rifle and a lighter, faster-handling carbine—without sacrificing performance or reliability. It’s a forward-thinking solution that reflects Colt’s legacy of battlefield innovation while delivering unmatched flexibility for civilian and professional applications alike.
Contents:
Contents:
This example will ship with the soft Colt rifle case, light blue Colt Custom Shop box with gold logo, additional 5.56 NATO complete upper assembly, and all other contents and accessories as pictured above!
Return Policy:
We gladly offer a 3 day unfired inspection policy from the time that the firearm is delivered to your FFL. Refunds are available for all qualifying orders.
Shipping Details
Handgun Standard Shipping with Insurance $50.00
Long Gun Standard Shipping with Insurance $70.00
Any orders placed with magazines that are not compliant with your state, county, or city regulations will not ship with your order.
We strive to ship orders within the close of the following business day after payment and documentation is received.
Payment Details
We accept all forms of Payment including Personal Check, Business Check, PO Money Orders, Certified Check, Etc.
Please note we place a 7 business day hold on shipment, for all non-certified payments.
Payment MUST be received within 14 days.
Return Policy
We gladly offer a 3 day unfired inspection policy from the time that the firearm is delivered to your FFL. Refunds are available for all qualifying orders.
Additional Details
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About Us
From a small town hobby, to a leader in the investment and collector grade firearms industry. Bryant Ridge Firearms is here to offer the best in quality and customer service when you are looking to unload your collector grade firearm collection.
