Dirty Bird Bakersfield
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Description
The Dirty Bird 16″ 5.56 M4 Carbine barrel is the backbone of a retro build. Machined from CrMoV steel with a chrome-lined bore and chamber, it’s built for the guys who shoot their rifles hard and would rather clean less and run more. Chrome lining shrugs off corrosion, extends throat life, and makes carbon come out easy after a long range day — the same reason the military has specified it for decades.
The 5.56 NATO chamber runs everything from cheap 55gr blasting ammo to duty-grade 62gr and .223 Remington without complaint, and the 1:7 twist stabilizes heavy loads all the way up to 77gr match if you want to stretch it out. Carbine-length gas keeps the rifle running dirty, cold, or suppressed. The M4 profile with phosphate-coated M4 feed ramp extension drops straight into any standard M4-cut upper.
Where this one earns its keep is the front sight. It ships with a pinned F-marked front sight base, which is the taller FSB spec’d for flat-top upper receivers. Run it under a detachable carry handle or with a standard-height rear BUIS and your sights line up where they’re supposed to — no shimming, no holding low, no “why is my front post buried in the rear aperture.”
It also ships with the handguard cap, delta ring assembly, and front sling swivel already installed, so you’re not chasing down small parts to finish the front end — pair it with a set of standard M4 drop-in handguards and the build comes together fast. Thread it, torque it, headspace it, and you’ve got a rifle that will outlast most of what’s bolted around it.
Backed by the Dirty Bird Lifetime Guarantee
FEATURES
- 16″ barrel length
- Chrome-lined bore and chamber for extended barrel life and easier cleaning
- Pinned F-marked front sight base — correct sight height for flat-top uppers
- Ships with handguard cap, delta ring assembly, and sling swivel — ready for standard M4 two-piece drop-in handguards
- CrMoV (chrome moly vanadium) steel construction
- Manganese phosphate exterior finish
- 5.56 NATO chamber — safely runs 5.56 NATO and .223 Rem
- 1:7 twist stabilizes 55gr through 77gr projectiles
- Carbine-length gas system
- M4 profile with phosphate-coated M4 feed ramp extension
- 1/2×28 threaded muzzle accepts standard AR-15 muzzle devices
IN THE BOX
- 16″ 5.56 M4 profile barrel
- Pinned F-marked front sight base and assembly
- Handguard cap
- Delta ring assembly
- Front sling swivel
Dirty Bird Industries — Premium AR-15 and AR-10 Components, Built to Last.
Designed for builders who demand uncompromising quality, reliable performance, and accessible pricing without the premium markups common from larger brands.
Founded by Builders, Built to Last
Founded in 2015 by brothers Jay and Dustin Pitcher in a Bakersfield, California garage, Dirty Bird Industries started as a family-owned operation specializing in custom Cerakote finishes and high-quality AR parts. Building on experience from its sister site, AR15Discounts.com, Dirty Bird Industries has grown into a nationwide company with a dedicated team focused on American-made gear that shooters trust.
American-Made Quality and Precision
Through strategic partnerships with leading domestic manufacturers, Dirty Bird Industries sources and develops components using advanced CNC machining, rigorous testing, and mil-spec standards. By managing larger volumes, the company delivers proven, high-end materials and precision engineering at fair prices that meet the high standards set for its own builds.
Proven Components for Serious Builds
Standout offerings include precision-forged 7075-T6 upper and lower receivers, enhanced black nitride bolt carrier groups, single-stage nickel Teflon triggers, free-float M-LOK handguards, complete upper assemblies, and comprehensive lower parts kits. These products create a cohesive selection for everything from custom builds to high-performance rifles nationwide, supported by batch inspections, mil-spec compliance, and ongoing innovations.
Zero Risk Guarantee Program
For total confidence, Dirty Bird Industries backs eligible parts and accessories with its Zero Risk Guarantee Program. This includes free shipping on orders over $50, package protection up to $5,000, lifetime free returns with full refunds within 45 days or store credit after, and expert support. As passionate shooters, the team at Dirty Bird Industries stands behind every product because the company builds, tests, and uses them too, providing authentic value and dependable gear.
Additional information
| Weight | 32 oz |
|---|---|
| Dimensions | 18 × 2 × 4 in |
| Finish | Phosphate + Chrome Lined |
| Barrel Profile | M4 |
| Cartridge Compatibility | 5.56 NATO |
| Gas Block Journal | 0.75 |
| Barrel Length | 16" |
| Gas System Length | Carbine |
| Platform | AR-15 |
| Twist Rate | 1:7 |
| Muzzle Thread Pattern | 1/2×28 |
| MPN | D264 |
| UPC | 810084375129 |
Compliance
NFA (National Firearms Act) compliance is crucial for legal ownership and transfer of regulated firearms and accessories like short-barreled rifles, suppressors, and certain types of ammunition, ensuring adherence to federal regulations to avoid legal penalties and ensure responsible firearm ownership.
