Saltwater Arms castle nuts are produced from 416R stainless steel and manufactured to Mil-Spec dimensions. The castle nuts fit all standard carbine and pistol buffer tubes and secure your carbine and pistol buffer tube to your AR10 or AR15 lower receiver. All Saltwater Arms components are corrosion-resistant, high quality and 100% American made. Compatible with standard AR10 / AR15 buffer tubes.
- 416 Stainless Steel
- Notched for Staking
- Weight: 0.4 ounces
- 100% American Made
