Guntec 7.5″ Chameleon Coated 5.56 1:7 Twist M4 4150 Barrel

Unleash premium performance and stunning aesthetics with the Guntec 7.5" Chameleon Barrel, engineered for AR-15 pistols and SBR builds. Combining rugged reliability with a show-stopping Rainbow PVD finish, this barrel is built to perform and designed to turn heads.

✔️ 7.5" Barrel Length – Compact and ideal for AR-15 pistol configurations or SBR setups.
✔️ Chambered in 5.56 NATO/.223 – Versatile compatibility with both 5.56×45mm and .223 Remington rounds.
✔️ 1:7 Twist Rate – Perfect for stabilizing heavier grain bullets (62gr–77gr), ideal for tactical and defensive use.
✔️ M4 Contour Profile – Balanced profile that reduces weight without compromising strength.
✔️ 4150 Chromoly Steel Construction – Superior durability and heat resistance for long service life.
✔️ Black Nitride Coating – Enhanced corrosion resistance and increased surface hardness.
✔️ Rainbow PVD Finish – Eye-catching chameleon-style finish adds a unique aesthetic while providing an extra layer of surface protection.
✔️ M4 Feed Ramps – Ensures reliable feeding and compatibility with standard AR-15 upper receivers.
✔️ .750” Gas Block Journal – Compatible with most low-profile gas blocks.
✔️ Carbine-Length Gas System – Optimized gas flow for consistent cycling and reduced recoil in short barrel builds.
✔️ 1/2x28 Thread Pitch – Standard threading to accommodate muzzle devices like flash hiders, compensators, or suppressors.
✔️ Spiral Engraved Markings – A distinct touch of style etched near the barrel break for a high-end finish.
✔️ High Heat Cerakote Paint – Withstands extreme operating temperatures and provides lasting finish retention.

Made in the USA by Guntec USA, a trusted manufacturer since 1989, this barrel combines form, function, and flair — delivering a compact performance solution with standout looks for your next AR-15 build.

FREE SHIPPING – Order now and elevate your pistol build with a splash of color and precision!