Description
Item Description
Bryant Ridge Co. is pleased to present this Colt Monolith AR-15 Complete Upper Receiver for a penny-start auction.
SPECIFICATIONS:
Manufacturer: Colt
Model: Monolith AR-15 Complete Upper Receiver
Caliber: 5.56 NATO
Finish: Black Anodized
Barrel Length: 17" I3629 M P Barrel with 1/7 Twist Including the Surefire Warcomp-556-CTN-½-28 Closed-Tine Flash Hider / 14 ½" Originally (Surefire Flash Hider welded to the barrel making it a 17")
Optics/Sights: Folding Wing Protected Post Front with
Action: Semi-Automatic Rifle -Complete Upper Receiver Only-
Markings: The left side of the receiver is marked “US PAT 8234808.” The top of the barrel is marked “I3629 M P / 5.56 NATO 1/7.” The flash hider is marked “SUREFIRE LLC / WARCOMP-556-CTN-½-28.”
Bryant Ridge's Analysis:
The Colt Monolith AR-15 Complete Upper Receiver in 5.56 NATO represents a factory-configured assembly built to the company’s long-standing military-pattern specifications and quality standards. Finished in black anodizing, the upper features a 17-inch barrel marked “I3629 M P / 5.56 NATO 1/7,” indicating a 1-in-7-inch twist rate suitable for stabilizing a wide range of modern projectile weights, including heavier 62- to 77-grain bullets. The barrel is fitted with a SureFire WarComp-556-CTN-½-28 closed-tine flash hider, a hybrid muzzle device designed to reduce flash signature while offering compensating characteristics and compatibility with certain SureFire suppressor systems. The left side of the receiver is marked “US PAT 8234808,” reflecting Colt’s patented design features incorporated into the upper assembly.
Model: Monolith AR-15 Complete Upper Receiver
Caliber: 5.56 NATO
Finish: Black Anodized
Barrel Length: 17" I3629 M P Barrel with 1/7 Twist Including the Surefire Warcomp-556-CTN-½-28 Closed-Tine Flash Hider / 14 ½" Originally (Surefire Flash Hider welded to the barrel making it a 17")
Optics/Sights: Folding Wing Protected Post Front with
Action: Semi-Automatic Rifle -Complete Upper Receiver Only-
Markings: The left side of the receiver is marked “US PAT 8234808.” The top of the barrel is marked “I3629 M P / 5.56 NATO 1/7.” The flash hider is marked “SUREFIRE LLC / WARCOMP-556-CTN-½-28.”
Bryant Ridge's Analysis:
The Colt Monolith AR-15 Complete Upper Receiver in 5.56 NATO represents a factory-configured assembly built to the company’s long-standing military-pattern specifications and quality standards. Finished in black anodizing, the upper features a 17-inch barrel marked “I3629 M P / 5.56 NATO 1/7,” indicating a 1-in-7-inch twist rate suitable for stabilizing a wide range of modern projectile weights, including heavier 62- to 77-grain bullets. The barrel is fitted with a SureFire WarComp-556-CTN-½-28 closed-tine flash hider, a hybrid muzzle device designed to reduce flash signature while offering compensating characteristics and compatibility with certain SureFire suppressor systems. The left side of the receiver is marked “US PAT 8234808,” reflecting Colt’s patented design features incorporated into the upper assembly.
Designed for compatibility with standard mil-spec AR-15 lower receivers, this complete upper provides shooters with a ready-to-install configuration suited for defensive use, training, or general sporting applications. The folding, wing-protected front sight enhances durability while allowing flexibility for optics mounting, and the 5.56 NATO chambering ensures reliable function with both 5.56 NATO and .223 Remington ammunition (where appropriate and safe per manufacturer guidance). Combining Colt’s reputation for adherence to military specifications with modern muzzle device technology, this upper receiver assembly reflects a balance of proven platform design and contemporary performance enhancements.
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.
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
Our #1 priority is customer satisfaction. We want to build a lasting trust in the relationship with our customers, so that you will always look to us for all your firearms needs. If you have any issues with your transactions please contact us, and we will work with you to resolve any issues you may have. We greatly appreciate your trust in us and we look forward to fulfilling all your future firearm needs.
Bryant Ridge also reserves the right to cancel any sales that may occur while gunbroker.com is experiencing technical issues that affects the entire site or a complete site outage, within an hour of the auction ending.
We have an amazing inventory of classic and collector firearms that we are adding to Gunbroker daily. Stay up to date on all of our latest auction by adding us to your favorite sellers list.
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. 
Additional Information
GunbrokerLink: |
https://www.gunbroker.com/item/1160907477 |
BidPrice: |
0.01 |
AuctionEndDate: |
2026-03-22 21:30:00 |
CurrentBid: |
705 |
SoldOutTime: |
2026-03-22 17:34:23 |
