LWRCI 9-Tooth Barrel Nut / Locking Ring
The LWRCI 9-Tooth Barrel Nut (U01-0178C01) is the essential structural component for securing the proprietary barrel system on LWRCI rifles. Unlike standard AR-15 barrel nuts, this 9-tooth "Locking Ring" is a specialized part designed to interface with LWRCI’s unique upper receiver and rail geometry. It is a critical item for armorers, gunsmiths, or enthusiasts performing barrel swaps, caliber conversions, or deep maintenance on their LWRCI platforms.
Precision-machined from high-strength 4140 steel and finished with a durable manganese phosphate or black nitride coating, this barrel nut is engineered to withstand the extreme torque and thermal stress associated with the LWRCI gas piston and DI (Direct Impingement) systems. The 9-tooth design requires the specialized LWRCI 9-Tooth Barrel Nut Wrench for proper installation and removal. Whether you are building an IC (Individual Carbine), SIX8, or REPR series rifle from the ground up or replacing a worn locking ring, this OEM factory part ensures the rigid barrel-to-receiver lockup that provides the foundation for LWRCI’s legendary accuracy.
Note: Requires the LWRCI 9-Tooth Armorer’s Wrench for installation. Not compatible with standard AR-15 barrel nut wrenches.
Key Features
- Proprietary 9-Tooth Interface: Specifically designed for the unique locking system used on LWRCI upper receivers.
- High-Strength 4140 Steel: Manufactured from premium alloy steel to prevent thread stretching and tooth deformation under high torque.
- Factory OEM Reliability: The same component used in factory builds for the IC, SIX8, and older M6 series rifles.
- Consistent Barrel Seating: Provides a uniform clamping force to ensure maximum surface contact between the barrel extension and the receiver.
- Corrosion Resistant Finish: Finished to Mil-Spec standards to resist moisture, chemicals, and heat during high-volume strings of fire.
- Made in the USA: Proudly manufactured in Cambridge, Maryland, by LWRC International.
Product Specifications
- Brand: LWRCI (Land Warfare Resources Corp International)
- Model: 9-Tooth Barrel Nut / Locking Ring
- Material: 4140 Steel
- Finish: Manganese Phosphate / Black
- Teeth Count: 9-Tooth
- Compatibility: LWRCI IC, SIX8, and legacy M6 platforms
- Weight: 0.12 lbs
- MPN: U01-0178C01
- UPC: 859890005233
