Criterion Barrels

Criterion Barrels ranked #94 of 323 brands on GunPartPicker in September 2026, just behind Samson, with about 1 in every 1000 parts builders added. Up from #108 in August. Builders reached for Criterion Barrels mostly for barrel parts. The most added single part was the Core Series .223 Wylde Chrome-Lined Barrels For AR-15 - Core .223 Wylde 14.5'''' 1-8 Taperd Mid-Length Chrome-Line Thrd, taking the top spot from the AR-15 Barrels, Fluted, Stainless Steel, Rifle-Length - AR-15 Barrel, 18'''', Fluted, Rifle-Length, Stainless Steel.

Barrels were the busiest Criterion Barrels category in September: 31 products came back in stock, several more than once, and demand for them rose about 41% on August. About 40% of the 124 Criterion Barrels products we track are in stock today.

Also popular this month: Criterion Barrels 11.5" .223 Wylde Core Phosphate/Chrome-Lined Carbine Length Barrel 1:8 Twist - 15110-CR6, Core Series .223 Wylde Chrome-Lined Barrels For AR-15 - Core .223 Wylde 10.5'''' 1-8 Tapered Carbine Chrome-Line Thread, Criterion Barrels 12.5" .223 Wylde Core Phosphate/Chrome-Lined Carbine Length Barrel 1:8 Twist - 15120-CR6 and Criterion Barrels 11.5" .223 Wylde Hybrid Phosphate/Chrome-Lined Carbine Length Barrel 1:8 Twist.

Why Criterion Barrels

Criterion makes button rifled AR-15 and AR-10 barrels in Germantown, Wisconsin. Its rifling process was developed with John Krieger, the custom barrel name, with the goal of match accuracy at a production price.

The pitch is accuracy without a custom barrel bill. Criterion barrels were standard on Fulton Armory rifles for years, and they've long been sold at prices close to entry level or select barrels from other makers.

In practice they sell above the typical barrel, about $315 against roughly $200, and about 5% of barrels added to builds here are Criterion. That's a solid share for a barrel with no budget version.

You're paying around $100 more than a basic barrel, and the gain only shows if the rest of the rifle and your ammo can use it.

We'd put a Criterion on a precision or DMR style build where groups matter. On a plinker, a cheaper barrel does the job.