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Mfg Item #: A5101020
This steel AR-15 castle nut is virtually indestructible and works with commercial, military, and hybrid buffer tubes. It fits most AR-15s and AR variants, but it is not compatible with 308 rifles.
| Size | Mil-Spec |
|---|---|
| Type | Castle Nut |
| Model | AR-15 |
| Series | Castle Nut |
| Material | Steel |