If you’re building or upgrading an AR-15, the barrel is the heart of your rifle’s performance. This 16″ 4150 M4 Contour Barrel is a core component designed for reliability and accuracy. It’s the right choice for shooters who need a durable, all-purpose barrel that handles a wide range of 5.56 ammunition. You get a proven M4 profile that balances weight and heat dissipation, paired with a carbine-length gas system for smooth cycling.
Key Features
- Manufactured from 4150 Chrome Molybdenum Steel for superior strength and service life.
- M4 contour provides a classic look and optimal balance between rigidity and weight.
- Carbine-length gas system ensures reliable operation with standard 5.56 NATO and .223 Remington loads.
- 1:8 twist rate stabilizes both lighter varmint rounds and heavier bullets up to 77 grains.
- Chambered in 5.56 NATO for full compatibility with both 5.56 and .223 Remington ammunition.
- Muzzle is threaded 1/2″-28 for direct attachment of common flash hiders, compensators, or suppressors.
Built For
This barrel is ideal for the shooter assembling a general-purpose rifle for range use, training, or home defense. Its specifications make it a versatile workhorse, equally capable of running inexpensive 55-grain bulk ammo or more precise match-grade loads. It’s a foundational AR-15 part for a reliable build you can count on.
Specifications
- Caliber: 5.56 NATO
- Material: 4150 Chrome Moly Steel
- Length: 16 Inches
- Twist Rate: 1:8
- Gas System Length: Carbine
- Muzzle Thread: 1/2″x28 TPI
- Profile: M4 Contour
FAQ
Is this barrel compatible with a .223 Wylde chamber?
No, this barrel features a standard 5.56 NATO chamber. It will safely fire both 5.56 NATO and .223 Remington ammunition.
Will I need a front sight base with this barrel?
No, this is a modern barrel designed for a low-profile gas block, which is then covered by your handguard. A front sight base is not used unless you are specifically building a classic-style rifle.
Reviews
There are no reviews yet.