AR-15/M16 300 BLK S2W Hammer Forged Barrels - 10.3" S2W 300 BLK Barrel, 1-8 Twist

Name: AR-15/M16 300 BLK S2W Hammer Forged Barrels - 10.3" S2W 300 BLK Barrel, 1-8 Twist
Brand: Daniel Defense
Availability: InStock

Daniel Defense · Barrels

No ratings yet

AR-15/M16 300 BLK S2W Hammer Forged Barrels - 10.3" S2W 300 BLK Barrel, 1-8 Twist

Best price

$323.49at Ammunition Depot

In stock Lowest in 30 dayschecked Nov 12, 2026

Buy at Ammunition Depot

Compare 4 stores

Fits and works with

Caliber: 300 Blackout · Shop matching ammo
Bolt: Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
Barrel length: 10.3" · Handguards

Specifications

Manufacturer: Daniel Defense
Color: Black
Platform: AR-15
Caliber: 300 Blackout
Barrel length: 10.3"

Where to buy

Store	Price	Availability	Buy
Ammunition Depot Best price	$323.49checked Nov 12, 2026	In stock	Buy at Ammunition Depot
Brownells 17.76% off · ends Nov 15 · exclusions apply	$348.00checked Nov 13, 2026	In stock	Buy at Brownells
Battlehawk Armory	$309.26Salechecked Nov 11, 2026	Check store	Buy at Battlehawk Armory
GrabAGun	$319.99checked Nov 12, 2026	Check store	Buy at GrabAGun

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

Show

Lowest in-stock price in the last 30 days: $323.49 at Ammunition Depot. Dashed line = out of stock. Tracking since Sep 27, 2026.

Show the prices as a table

Store	Latest	Lowest	Highest
Ammunition Depot	$323.49	$323.49	$323.49
Battlehawk Armory	$309.26	$301.94	$309.26
Brownells	$348.00	$348.00	$348.00
GrabAGun	$319.99	$319.99	$319.99

Since Sep 27, 2026.

About this part

The AR-15/M16 300 BLK S2W Hammer Forged Barrels - 10.3" S2W 300 BLK Barrel, 1-8 Twist is a 10.3" 300 Blackout barrel from Daniel Defense. It's sold by 4 stores (2 in stock), from $309.26 to $348.00. The lowest in-stock price in the last 30 days was $323.49 at Ammunition Depot.

From the manufacturer

These barrels are cold hammer-forged from high-grade chromium-molybdenum-vanadium alloy steel for exceptional strength and accuracy potential-like a high-end match rifle barrel. Magnetic particle inspection (MPI) ensures there are no internal flaws in the metal. Durable manganese phosphate finish give excellent resistance to surface wear. Barrel extension has M4-type feed ramps. Choose caliber, profile, length, and gas block/sight base option to fit your needs. Strength 2 Weight 300 Blackout barrels features a 1-8 twist, and have a heavier profile, that tapers down towards the muzzle. This profile provides superior strength and rigidity. OD at gas block is .750". Mfg: Daniel Defense