Stag Arms 18" 5.56 NATO Rifle Heavy Fluted 1:8 Barrel

Name: Stag Arms 18" 5.56 NATO Rifle Heavy Fluted 1:8 Barrel
Brand: Stag Arms

Stag Arms · Barrels

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Stag Arms 18" 5.56 NATO Rifle Heavy Fluted 1:8 Barrel

Best price

$199.99at Dirty Bird

checked Nov 13, 2026

Buy at Dirty Bird

Fits and works with

Caliber: 5.56 / .223 · Shop matching ammo
Bolt: Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
Gas system: Rifle · Handguards
Muzzle thread: 1/2x28 · Muzzle devices
Barrel length: 18" · Handguards

Specifications

Manufacturer: Stag Arms
Platform: AR-15
Caliber: 5.56 mm NATO
Gas system: Rifle
Barrel length: 18"
Twist rate: 1:8
Thread pattern: ½ x 28

Where to buy

Store	Price	Availability	Buy	Add to build
Dirty Bird	$199.99checked Nov 13, 2026	Check store	Buy at Dirty Bird

Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.

Price history

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Dashed line = out of stock. Tracking since Oct 28, 2026.

Show the prices as a table

Store	Latest	Lowest	Highest
Dirty Bird	$199.99	$199.99	$199.99

Since Oct 28, 2026.

About this part

The Stag Arms 18" 5.56 NATO Rifle Heavy Fluted 1:8 Barrel is an 18" 5.56 / .223 barrel from Stag Arms with a rifle gas system. One store lists it, Dirty Bird at $199.99.

From the manufacturer

The 18" 5.56 NATO barrel has a heavy barrel profile with fluting running down the length of it. It is the same barrel used on our Stag 15 3Gun Elite rifle. The barrel is made of 416R Stainless Steel and has a 1/8 twist. The barrel extension is pre-installed and headspaced. Caliber: 5.56 NATO | .223 Length: 18" Weight: 2.4 lbs Diameter at the gas port: .750" Barrel Threading: 1/2 x 28 Barrel Profile: Heavy barrel Barrel Material: 416R Stainless Steel Twist Rate: 1/8 Bore & Barrel Lining: None Barrel Coating: None Gas System: Rifle Length Direct Impingement SKU: STAG400018