Ergo Castle Nut for AR-15

ERGO Castle Nut Features The ERGO Castle Nut is built to standard mil-spec CAR castle nut dimensions ensuring compatibility with a wide range of AR platform rifles. Its steel construction provides dependable durability while maintaining secure retention of the buffer tube during operation. The black coated finish helps resist wear while maintaining a clean appearance. Designed to work with commercial military and hybrid buffer tubes the nut supports a variety of AR receiver extension configurations. Its straightforward design allows reliable installation when paired with the appropriate armorer tools. These characteristics make it a dependable AR-15 buffer tube castle nut for rifle builds and maintenance. ERGO Castle Nut Specifications Manufacturer: ERGO Model: Castle Nut Platform: AR-15 and AR variants Type: Buffer tube castle nut Material: Steel Finish: Black coated Compatibility: Commercial military and hybrid buffer tubes Standard: Mil-spec CAR castle nut design