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Colt AR-15 Upper Receiver Assembly 5.56x45mm 16″ Barrel Monolithic Rail


Buy Colt AR-15 Upper Receiver Assembly 5.56x45mm For Sale

The Colt AR-15 Upper Receiver Assembly 5.56x45mm comes with Magpul adjustable flip-up rear sight, charging grip, bolt and bolt carrier assembly. The Colt AR-15 Upper Receiver also comes with an A2 flash hider, an M4 polymer handguard, and a barrel with a black Parkerized finish.

The colt sp1 clone with Monolithic Rail comes with a charging handle, bolt and bolt carrier assembly. Featuring a flat-top upper receiver with a Picatinny rail, this assembly is more than ready to offer the shooter maximum versatility regarding mounting accessory devices. The free-float monolithic rail is unique to this upper receiver, machined together in conjunction with the upper receiver portion of the upper assembly. 

The monolithic rail presents the user with a highly versatile single-plane rail that eliminates the chance of front-mounted accessories being canted or unlevel. The colt 16 also features a free-floating barrel to enhance accuracy and target acquisition.

What is the Primary Purpose of the Colt Crx 16?

The colt complete upper 16 inch barrel and lower receivers are simply the two halves of a receiver in the AR-15/M-16 family of guns. In a two-piece type gun, the upper part carries the barrel and bolt, while the lower part carries the firing mechanism and magazine.

What is a Colt Cr6920 for Sale?

Quad-rail colt cr6920 for sale, The Colt Government Carbine, is a portable, lightweight weapon with 5.56mm firepower and excellent mobility. The Government Carbine’s 4-position telescoping buttstock enables it to accommodate users of various sizes and physical characteristics.

Are all Colt 10.5 Barrel the Same?

Nevertheless, the precise fit of colt 10.5 barrel and lower receivers will fluctuate between different manufacturers. Therefore, they will fit. You will only come across a few that are simpler to assemble than others. They ought to mate as long as the receivers are Mil-Spec.

How Important is the Colt a2?

The top of the colt xm16e1 is more than just its receiver. In its complete form, it does much of the heavy lifting for the rig, cycling the gun, ejecting the spent round, and cocking the hammer, among other things.


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

Specifications Product Information

Cartridge 5.56x45mm NATO
Finish Black Parkerized
Material Aluminum
Style Monolithic Free Floating
Barrel Length 16 Inches
Twist 1:7 Inches
Threads 1/2″-28
Barrel Contour M4
Sights Yes
Barrel Finish Black Parkerized
Chrome Lined Yes
Gas Block Diameter 0.75 Inches
Gas System Length Carbine
M4 Feed Ramps Yes
Upper Receiver Type A3 Flat-Top
Barrel Material Chrome Moly Vanadium Steel
Handguard Free Float Monolithic
Bolt Carrier Assembly Included Yes
Muzzle Device A2 Flash Hider
Mil-Spec or Commercial Mil-Spec
Compatible With


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