AR15 Castle Nut Lock Nut Ring

Original price was: $7.99.Current price is: $5.99.


  • Castle Nut
  • For Both Milspec Buffer Tubes / Commercial Buffer Tubes
  • Carbon Steel Machined
  • Parkerized Finish
  • 1 Single Castle Nut Included
  • Castle Nut Is Compatible With All AR15, LR308, AR10 Receivers

In stock

SKU: CSTLNUT-1PC Category:


Our AR15 Castle Nut is perfect for your next build or if you’re changing out worn out parts on your current AR15 rifle. It is machined from carbon steel and finished off in a parkerized finish for durability and ruggedness. Our AR15 Castle Nut will work with AR15 lower receivers or Armalite AR10 pattern receivers or DPMS LR308 lower receivers. Our castle nut is compatible with both Milspec buffer tubes and commercial spec buffer tubes, which can be found in our store under “Stock Components” category.