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 |
|---|
Determined at checkout.
