![Ergo Castle Nut Stock Wrench Blk Ergo Castle Nut Stock Wrench Blk](https://cdn11.bigcommerce.com/s-jt5os4ehnz/images/stencil/300x300/products/12219/24647/RPLEG4959__05055.1704596023.jpg?c=1)
Ergo Castle Nut For Ar15 Blk
Ergo Grip
$10.88
ERGO brings this receiver extension castle nut for M4 style receiver extension tubes.
Features :
Features :
- Standard Mil-Spec CAR castle nut
- Made from steel and coated black