16" 5.56 M4 Barrel (1/9 twist)

$149.99 $99.99
You save: $50.00
Current stock: 0


This 16" Barrel is ready to install on any .223 or 5.56 upper receiver. The barrel features a 5.56 NATO chamber for both commercial and military ammunition.

The 1/9 twist is perfect for stabilizing light weight projectiles.  It is made from 4140 steel and is chrome lined and manganese phosphate finished. The barrel has a government profile which includes an M203 cut for reduced weight and maximum utility.  The Barrel extension is pre installed and headspaced from the factory.


Caliber: 5.56 NATO | .223

Length: 16"

Diameter at the gas port: .750"

Barrel Threading: 1/2x28

Barrel Profile: Government Profile

Barrel Material: 4140 Chrome Moly Vanadium

Twist Rate: 1/9

Bore & Barrel Lining: Mil-Spec Chrome Lined

Barrel Coating: Manganese Phosphate

Gas System: Carbine Length Direct Impingement

SKU: SA400002


Q: Will this work with my upper receiver?

A: The barrel will work with any mil-spec upper receiver.

Q: Do you provide instructions on how to install the barrel?

A: Unfortunately we don't provide directions on how to install a barrel and recommend that it be installed by a gunsmith to prevent damage to the rifle.

Q: Do I have to purchase a matched bolt to my barrel?

A: With AR-15's as long as you are using the proper bolt for the caliber you do not need to match a bolt to the barrel.


Reviews (3)

DAN 8th Sep 2017

M4 barrel

Great barrel good finish and fast delivery. Stag makes great quality products and would recommend to all my friends

Tim 7th Sep 2017

M4 5.56 barrel

Great barrel, fast shipping! Use alot of these on my builds