KAK OE-SPEC- 5.56 NATO 18" Mid Gas AR15 Barrel- Nitride

Name: KAK OE-SPEC- 5.56 NATO 18" Mid Gas AR15 Barrel- Nitride
Brand: KAK Industry

KAK Industry · Barrels

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$139.95at KAK Industry

checked Oct 8, 2026

Buy at KAK Industry

Where to buy

Store	Price	Availability	Buy	Add to build
KAK Industry	$139.95checked Oct 8, 2026	Check store	Buy at KAK Industry

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Dashed line = out of stock. Tracking since Oct 6, 2026.

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Store	Latest	Lowest	Highest
KAK Industry	$139.95	$139.95	$139.95

Since Oct 6, 2026.

About this part

The KAK OE-SPEC- 5.56 NATO 18" Mid Gas AR15 Barrel- Nitride is an 18" 5.56 / .223 barrel from KAK Industry with a mid-length gas system. One store lists it, KAK Industry at $139.95.

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: Mid-length · Handguards
Muzzle thread: 1/2x28 · Muzzle devices
Barrel length: 18" · Handguards

Specifications

Manufacturer: KAK Industry
Platform: AR-15
Caliber: 5.56 mm NATO
Gas system: Mid
Barrel length: 18"
Twist rate: 1:7
Thread pattern: ½ x 28

From the manufacturer

VALUE-LINE 5.56 NATO 18" Mid Gas AR15 Barrel- Nitride* Chamber- 5.56 NATO* Length- 18"* Gas system- Mid Length* Gas Block Size- .750* Threads- 1/2x28* Finish- Nitride* Twist- 1:7* Material- 41V50* Extension- M4 Feed Ramps * Barrel dimpled for gas block set screw* Marked for Caliber and Twist* Weight- 32.98 OZ* Fully Made In House From KAK Industry Produced BlanksAs a high volume contract manufacturer for the firearms industry, KAK is able to leverage its machining capacity to bring the same quality parts that we provide to some of the biggest names in the industry, straight to the retail customer. We manufacture our barrels from the raw material all the way to the complete product, all under our own roof. Our barrels are fully inspected through the entire process, including air-gauging the bores, physical measurements of the threads and outer diameters, and 100% gauging of the headspace tolerance. Our OE-Spec line provides you with the quality you demand and the value you desire.