Proof Research PR15 .223 Wylde Carbon Fiber AR Barrel, 16-inch

The Proof Research PR15 .223 Wylde Carbon Fiber AR Barrel, 16 inches (brand part no. 143391), is a complete, chambered AR-15 platform barrel built for shooters who want genuine weight savings without giving up match-grade accuracy. Proof Research builds this barrel from a match-grade 416R stainless steel core wrapped in proprietary aerospace-grade carbon fiber, cutting significant weight versus a comparable all-steel AR barrel without sacrificing rigidity or accuracy potential. Chambered in .223 Wylde, it reliably runs both .223 Remington and 5.56 NATO ammunition, and it ships threaded and ready to install, unlike Proof’s bolt-action blanks which require gunsmith fitting.

Key Specifications

• Chambered in .223 Wylde, reliably feeding both .223 Remington and 5.56 NATO ammunition.
• Cut to a 16 inch length, a common all-around AR-15 configuration.
• Rifled with a 1:8 twist rate, stabilizing a wide range of .223/5.56 bullet weights.
• Threaded 5/8-24 at the muzzle, ready for a brake or suppressor.
• Built around a 416R stainless steel core wrapped in aerospace-grade carbon fiber.
• Ships as a complete, chambered barrel, ready to install without gunsmithing.

Frequently Asked Questions

Does this barrel require chambering or fitting? No, it ships complete and chambered, ready to install on a compatible AR-15 upper.

What ammunition can I run in this barrel? The .223 Wylde chamber reliably runs both .223 Remington and 5.56 NATO ammunition.

Buy the Proof Research PR15 .223 Wylde Carbon Fiber AR Barrel

AR-15 builders who want real weight savings on a precision-oriented build without sacrificing accuracy will get exactly that with this complete, chambered carbon fiber barrel. Order it through our Lubbock, Texas gun shop and browse more AR barrels from Proof Research and other trusted brands.