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Ar-15 Modern Series Barrels 5.56mm - Ar-15 Modern Series 11.5 Carbine Barrel Gov'T
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$137.75
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SKU: 915000012
Overview
Built for AR-15 builds and upgrades, this 11.5-inch carbine barrel is aimed at shooters who want a compact 5.56 NATO option with a Government profile. It is chambered to accept both 5.56x45mm and .223 Remington ammunition, giving flexibility for range use and general rifle setup. Ballistic Advantage describes the barrel as precision machined from 4150 chrome-moly-vanadium steel alloy, with a nickel-boron coated barrel extension and M4 feed ramps to support reliable feeding and extraction. For hunters and outdoor shooters assembling a short-barreled rifle or refining an existing carbine, it offers a practical foundation without unnecessary extras.
Why Hunters Choose the Ballistic Advantage
Chambered 5.56
NATO, accepting both 5.56x45mm and
Available Multiple
Lengths and contours for different
Precision Machined
From 4150 chrome-moly-vanadium steel alloy
Nickel-boron Coated
M4 feed ramps included
Government Profile
Suits builders seeking a familiar
Key Features
- Ballistic Advantage AR-15 barrel in the Modern Series
- 11.5-inch carbine barrel with Government profile
- Chambered in 5.56 NATO for 5.56x45mm and .223 Remington ammo
- Precision machined from 4150 chrome-moly-vanadium steel alloy
- Nickel-boron coated barrel extension
- Includes M4 feed ramps to support reliable feeding and extraction
Best Used For
- For AR-15 builders choosing an 11.5-inch carbine barrel for a compact setup
- For shooters wanting a 5.56 NATO chamber that also accepts .223 Remington ammunition
- For upgrade projects where a Government profile barrel is specifically preferred
- For users looking for a precision-machined barrel with M4 feed ramps and nickel-boron extension
Specifications
| Barrel Contour | Government |
|---|---|
| Barrel Extension | Nickel-boron coated |
| Barrel Length | 11.5 |
| Blade Steel | 4150 chrome-moly-vanadium steel alloy |
| Caliber | 5.56mm |
| Chambering | 5.56 NATO |
| Compatible Ammunition | 5.56x45mm and .223 Remington |
| Country Of Origin | Ballistic Advantage |
| Feed Ramps | M4 feed ramps |
| Profile | Government |
Pros
- Chambered in 5.56 NATO, accepting both 5.56x45mm and .223 Remington ammunition.
- Available in multiple lengths and contours for different AR-15 build requirements.
- Precision machined from 4150 chrome-moly-vanadium steel alloy.
- Nickel-boron coated barrel extension with M4 feed ramps included.
- Government profile suits builders seeking a familiar AR-15 barrel contour.
- From Ballistic Advantage’s Modern Series for AR-15 platform builds and upgrades.
Considerations & Trade-offs
- This 11.5" carbine-length barrel is a compact option, so it is geared toward shorter AR builds rather than full-length rifle configurations.
- The Government contour is a specific profile choice, which may not suit shooters looking for a lighter or more specialized barrel shape.
- Chambered in 5.56 NATO, it will accept both 5.56x45mm and .223 Remington, but it is still a barrel-only component for a build or upgrade.
- The description highlights precision machining and a nickel-boron coated barrel extension, but it does not provide details on weight, twist rate, or other performance specifications.
Suggested Comparisons
- AR-15 replacement barrels
- 5.56 NATO chambered barrels
- Government profile barrels
- AR-15 upper receiver components
Suggested Accessories
- AR-15 upper receiver parts
- Barrel nut wrench
- Handguard
- Gas system components
Frequently Asked Questions
What chambering does this barrel use?
This barrel is chambered in 5.56 NATO, and the description says it accepts both military-type 5.56x45mm and civilian .223 Remington ammunition.
What profile is this barrel?
The product title identifies it as an 11.5" Carbine Barrel in Government contour.
What material is the barrel made from?
The long description states that Ballistic Advantage precision machines these barrels from 4150 chrome-moly-vanadium steel alloy.
Does this barrel include M4 feed ramps?
Yes. The long description says it has a nickel-boron coated barrel extension with M4 feed ramps to help ensure reliable feeding and extraction.
Is this barrel intended for a specific type of build?
The description says Ballistic Advantage offers these barrels in different chamberings, lengths, and contours so you can find the one needed for a rifle build or upgrade. It does not specify a single intended use beyond that.