Guntec AR15 Castle Nut Wide – Extreme Duty

Enhance your AR-15 with the Guntec AR15 Castle Nut Wide - Extreme Duty. Crafted from high-strength steel with a nitride finish, this castle nut is designed for extreme durability and fits both mil-spec and commercial buffer tubes. Its skeletonized extended design offers a sleek, heavy-duty appearance in black, making it a perfect upgrade for your firearm. Proudly made in the USA, this AR-15 accessory combines robust performance with superior quality.