Advanced Technology A5101020 AR-15 Castle Nut Mil-Spec Steel Black
Note: Pricing at our Livonia, MI retail store may be higher than our website pricing.
- Firearms purchased at our Livonia, MI retail store include one (1) month of Unlimited Range time & a CPL class at a reduced price.
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.