The Proof Research AR-Style Barrel 223 Wylde 11.50" Rifle Length Gas System 1:7" Twist 4 Grooves, 1/2"-28 tpi, Stainless stainless delivers precision and reliability for the AR platform with a caliber matched gas system (CAMGAS) that aligns gas port timing to the cartridge and profile, reducing recoil impulse and fouling while preserving smoother extraction and longer brass life. Engineered to support high performance cartridges, this barrel moves the gas port to maintain pressures close to the original AR design, enabling softer recoil, enhanced reliability, and better consistency during rapid fire. Crafted in stainless to resist wear and corrosion, its 11.50" length pairs with a rifle-length gas system and a 1:7 twist across four grooves to stabilize heavier projectiles while maintaining versatility for 223 Wylde configurations. This barrel is ideal for precision-style AR builds, compact dmr/varmint applications, and shooters seeking improved muzzle control and reduced receiver wear without sacrificing compatibility with a broad range of modern ammunition. With Proof Researchs focus on performance, you gain a dependable platform that stays on target longer, reduces fouling, and supports accuracy-oriented hunting and tactical engagements in a compact, reliable package.