Knight's Armament Receiver Extension/Sling Mount Castle Nut

Knight's Armament
SKU:
21496-1
$43.71
Current Stock:

Out of stock

Out of Stock

Knight's Armament Receiver Extension/Sling Mount Castle Nut

Replacement buffer tube/sling mount castle nut for the Knight's Armament Sling mounts, part numbers 22051-1 and 24103-1.  Current version for 2021, uses a standard armorer wrench for install.