This Fortis combo pairs a billet aluminum castle nut with a QD end plate for carbine-style buffer tubes on AR-15 and AR .308 rifles. The end plate adds a quick-detach sling swivel socket at the rear of the receiver, and the lightweight castle nut saves weight over steel. Black mil-spec anodized and made in the USA.
- Brand: Fortis Manufacturing
- Includes: Castle nut and QD end plate
- Fits: Carbine buffer tubes, AR-15 and AR .308
- Sling mount: QD socket
- Material: 6061 aluminum
- Finish: Black mil-spec anodized
- Made in USA
- Manufacturer part number: QD END-CN-COMBO
