Tightens jam nut on almost any M4 collapsible stock.
![Butt Stock Parts And Assembly, AR-15 Butt Stock Parts And Assembly, AR-15](https://cdn11.bigcommerce.com/s-mcraq2wt5y/images/stencil/500x659/products/257/471/dsc616__38838.1549394730.jpg?c=2)
Add to Cart
The item has been added
![Sling Black, AR-15 Sling Black, AR-15](https://cdn11.bigcommerce.com/s-mcraq2wt5y/images/stencil/500x659/products/280/539/dsc2347__46500.1549394736.jpg?c=2)
Add to Cart
The item has been added
![Muzzle Caps, AR-15 Muzzle Caps, AR-15](https://cdn11.bigcommerce.com/s-mcraq2wt5y/images/stencil/500x659/products/210/652/dsc3063__19789.1549394745.jpg?c=2)
Add to Cart
The item has been added
![Bolt Assembly And Parts, AR-15 Bolt Assembly And Parts, AR-15](https://cdn11.bigcommerce.com/s-mcraq2wt5y/images/stencil/500x659/products/115/446/DSC03524__59331.1549394728.jpg?c=2)
Add to Cart
The item has been added
![Sight Tool AR-15 A1 Sight Tool AR-15 A1](https://cdn11.bigcommerce.com/s-mcraq2wt5y/images/stencil/500x659/products/174/794/dsc2215__62589.1549394757.jpg?c=2)
Add to Cart
The item has been added
![A2 Pistol Grip, AR-15 A2 Pistol Grip, AR-15](https://cdn11.bigcommerce.com/s-mcraq2wt5y/images/stencil/500x659/products/299/780/dsc2349__47580.1549394756.jpg?c=2)
Add to Cart
The item has been added
!