Buy Colt AR-15 Pistol Upper Receiver Assembly 5.56x45mm Monolithic Rail Online

The Colt AR-15 Upper Receiver Assembly with Monolithic Rail comes complete with charging handle, bolt and bolt carrier assembly. Featuring a flat-top upper receiver with plenty of picatinny slots that offer the shooter maximum versatility when it comes to mounting accessory devices. Unique to this upper receiver, is the free float monolithic rail which is machined together in conjunction with the upper receiver portion of the upper assembly. The monolithic rail presents the user with an extremely versatile single plane rail which eliminates the chance of front mounted accessories being canted or unlevel. The Colt Upper Receiver also features a free-floating barrel which is designed to enhance accuracy and target acquisition.

Features

Monolithic Rail
Free-Floating Barrel
Flat Top Upper
A2 Flash Hider
Black Parkerized Finish
Flip-Up Rear Sight

Note the design of the rear sight may vary as Colt production specifications change. Current uppers are being received with either Magpul or MaTech style adjustable flip-up rear sights. Buy Colt AR-15 Pistol Upper Receiver Assembly 5.56x45mm Monolithic Rail Online

Specifications

Cartridge	5.56x45mm NATO
Finish	Black Parkerized
Material	Aluminum
Barrel Length	11.5 Inches
Barrel Material	4150 Chrome Moly Vanadium Steel
Barrel Finish	Black Parkerized
Twist	1:7 Inches
Threads	1/2″-28
Barrel Contour	M4
Sights	Yes
Chrome Lined	Yes
Gas Block Diameter	0.75 Inches
Gas System Length	Carbine
M4 Feed Ramps	Yes
Upper Receiver Type	A3 Flat-Top
Handguard	Monolithic
Bolt Carrier Assembly Included	Yes
Muzzle Device	A2 Flash Hider
Mil-Spec or Commercial	Mil-Spec
Country of Origin	United States of America
Compatible With	AR-15

Brand

Colt

In 1836, Samuel Colt received the US Patent for his groundbreaking Colt Firearm, marking the inception of his illustrious career. Subsequently, he established his first factory to commence production. In 1847, Samuel H. Walker, a member of the US Army, collaborated with Colt to create the iconic Walker revolver, renowned for its enhanced power. Colt has remained a stalwart supplier of quality firearms to the US military throughout its storied history, a tradition that endures to this day. Revered for their classic revolvers, pistols, semi-automatic rifles, and accessories, Colt continues to captivate enthusiasts worldwide. Legendary models such as the Anaconda and Python stand as testament to Colt's legacy, earning widespread acclaim among aficionados. Today, Colt remains a highly coveted brand cherished by collectors and firearms enthusiasts globally.

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