Colt AR-15 Monolithic Carbine #6940 .223 Rem/5.56 NATO 16″ 1:7″
SOLD FOR: $1,050.03
LSB#: LSB251031NO016
Make: Colt
Model: AR-15 6940 Monolithic Carbine
Serial Number: CR801657
Year of Manufacture: Modern
Caliber: 5.56 NATO/ .223 Rem
Action Type: Semi-Automatic, Direct Impingement
Markings: The left side of the receiver is marked with the Colt Rampant logo and “US Patent 8234808” “Carbine Cal 5.56mm, CR801657/ Colt Defense, Hartford Conn. USA” The top of the barrel is marked “13629 MP 5.56 Nato 1:7”
Barrel Length: 16″ plus an A2 flash hider.
Sights / Optics: The front sight is a folding winged post on the gasblock. The rear sight is a Magpul folder.
Stock Configuration & Condition: The buttstock is an adjustable M4 style stock. The handguard is a quad rail style. The pistol grip is an A2 style. There are no chips or cracks. There are small scratches on the buffer tube. The checkering is crisp.
Magazine Quantity & Condition: One Magpul 30rd Straight magazine. Accepts standard AR-15 magazines.
Type of Finish: Matt Black
Finish Originality: Original
Bore Condition: The bore is bright and the rifling is sharp. There is no visible erosion in the bore. The bore rates about 10/10.
Overall Condition: This rifle retains about 99% of its original metal finish. This rifle has only very minor handling wear. It appears to not have been shot past the factory testfire. There is no notable damage. The markings are clear and legible. The screw heads are sharp and the pins are mostly unmarred. Overall, this rifle rates in Excellent condition.
Mechanics: The action functions correctly, as does the safety. The trigger has a light, crisp, and clean break. We did not fire this rifle, but we did perform a mechanic’s check. As with any used firearm, a thorough cleaning may be necessary to meet your maintenance standards.
Box, Paperwork & Accessories: Box
Our Assessment: This Colt AR-15 Monolithic Carbine represents a factory-built, duty-grade configuration from one of the most historically significant names in the AR platform. Built around Colt’s monolithic upper receiver concept, this carbine integrates the handguard and receiver into a single rigid structure, enhancing strength, alignment, and repeatability for mounted accessories. Colt’s reputation for military-contract standards, quality control, and adherence to proven specifications is evident throughout this rifle’s construction, making it a highly desirable example for collectors and shooters who value factory-correct Colt carbines.
Chambered in 5.56 NATO/.223 Remington and fitted with a 16 inch barrel featuring a 1:7 twist, this rifle is optimized for a broad range of modern projectile weights, including heavier duty and match loads. The direct impingement operating system remains true to the original AR design, delivering smooth cycling and consistent accuracy when properly maintained. The bright bore with sharp rifling and no visible erosion strongly suggests minimal use beyond factory testing, and the folding front and rear sights provide a practical, low-profile backup sighting solution that complements the rifle’s rail-centric design.
Overall, this example presents in excellent condition, retaining approximately 99 percent of its original matte black finish with only very minor handling wear visible, most notably small scratches on the buffer tube. The furniture remains clean and intact, the markings are crisp and legible, and the included Magpul magazine is present and correct. Mechanically sound with a clean, crisp trigger and properly functioning controls, this rifle stands as a near-new example of a modern factory Colt carbine, offering durability, performance, and long-term collectibility from Colt Defense. Please see our high resolution photos and good luck on your bid! MF
