Colt M4 to M5 Carbine Upper Receiver Kit 5.56 NATO
Upgrade your Colt M4 to modern M5 specifications with this complete upper receiver kit. Features a 16.1-inch heavy barrel in 5.56 NATO with black finish for enhanced accuracy and reliability.
Fits: Colt M4
Colt M4 to M5 Carbine Upper Receiver Kit
This upper receiver kit represents a practical upgrade path for shooters looking to modernize their existing Colt M4 platform rifle. The conversion maintains the proven reliability of the Colt system while incorporating M5 improvements.
Key Features
- 16.1-inch Heavy Barrel: The heavier profile barrel provides improved accuracy and sustained fire capability while maintaining the compact handling characteristics of a carbine
- 5.56 NATO Chambering: Ensures compatibility with standard military and commercial ammunition
- Complete Upper Assembly: Includes all necessary components for straightforward installation
- Black Finish: Durable, professional appearance with corrosion resistance
- M4 to M5 Upgrade: Modernizes your platform with current specifications
What You Get
This is a complete upper receiver assembly, ready to mount on your existing M4 lower receiver. The heavy barrel construction enhances accuracy for both tactical applications and precision shooting.
Ideal For
Shooters seeking to upgrade existing Colt M4 rifles, those building custom carbines, and anyone wanting a reliable, accurate 5.56 NATO upper assembly with proven Colt engineering.
Features
- complete upper receiver assembly
- chambered in 5.56 nato
- 16.1" chrome-lined heavy barrel
- one-piece free-floating m-lok handguard
- continuous mil-std-1913 top rail
- improved barrel retention interface with self-centering barrel nut and keyed barrel extension
- free-float barrel system for increased rigidity and accuracy
- includes: ambidextrous radian raptor charging handle, troy folding metal front sight, troy folding metal rear sight
- colt low-profile pinned gas block
- carbine-length direct impingement gas system
- hp/mpi tested bolt carrier group with chrome-lined carrier and properly staked gas key
- compatible with legacy m4 lower receivers
