The Proof Research Carbon Fiber Sendero Barrel Blank (brand part number 103531) is a 24-inch, .224-caliber barrel blank in the Sendero contour, sold unchambered for a gunsmith to fit, chamber, and crown to a customer’s specific action. Wrapped in aerospace-grade carbon fiber over a steel core by Proof Research, this blank carries a fast 1:7 twist rate suited to heavier-for-caliber .224 bullets, along with a 2.5-inch breech length over a 1.20-inch shank diameter, weighing approximately 3 pounds, 4 ounces before final chambering.

Key Specifications

• Chambered for .224-caliber cartridges at the customer’s chosen specification.
• Barrel length is 24 inches.
• Twist rate is 1:7, suited to heavier-for-caliber bullets.
• Breech length is 2.5 inches over a 1.20-inch shank diameter.
• Contour is Sendero, wrapped in carbon fiber over a steel core.
• Sold as a barrel blank for gunsmith chambering and fitting.
• Weighs approximately 3 pounds, 4 ounces unchambered.

Frequently Asked Questions

Is this barrel ready to install out of the box? No, this is an unchambered blank; a gunsmith must chamber, thread, and fit it to your specific action.

Why choose a 1:7 twist over a slower rate? A 1:7 twist stabilizes heavier, longer-for-caliber .224 bullets that a slower twist rate cannot spin fast enough to stabilize.

Buy the Proof Research .224 Sendero Blank, 1:7 Twist

Give your gunsmith a premium carbon-fiber blank matched to heavy .224 bullets. Order this rifle barrel from our Lubbock, Texas gun shop, and we will get it to your door as soon as it’s ready to ship.