Description
The Order Barrel Length Online is a precision-machined barrel extension designed for builders and enthusiasts. Manufactured from 4140 chromoly steel and finished with a durable black nitride coating, it offers enhanced durability and corrosion resistance. This component is engineered for direct compatibility with popular AR-15 platform uppers, providing a straightforward upgrade for custom configurations.
Key Features
- Precision CNC-machined from 4140 chromoly steel billet
- Black nitride finish for superior wear and corrosion resistance
- Designed for seamless fitment with mil-spec AR-15 upper receivers
- Maintains proper gas system alignment and timing
- Includes a standard .750″ journal for gas block installation
Specifications
| Caliber / Type | 5.56 NATO / .223 Remington Barrel Extension |
|---|---|
| Material | 4140 Chromoly Steel |
| Finish | Black Nitride (Melonite QPQ) |
| Compatibility | Mil-Spec AR-15 Pattern Upper Receivers |
| Weight | Approx. 3.2 oz |
This barrel extension is critical for headspacing your barrel to the upper receiver. The 4140 steel provides the necessary tensile strength for high-pressure 5.56 NATO rounds, while the nitride finish hardens the surface to over 70 HRC, significantly extending service life. Proper installation ensures correct cartridge headspace (SAAMI .223 Rem specs) and reliable bolt lockup.
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