Stakable FCD CNF castle nut paired with the steel ESF-H1 rear-QD end plate for a carbine receiver extension.
This configured pair combines Forward Controls Design's CNF castle nut with its ESF-H1 end plate. The CNF uses four 30-degree staking notches, while the steel ESF-H1 adds a single rear-facing QD socket. FCD sells the two pieces separately, so both product links are required.
Add the Forward Controls Design CNF and ESF-H1 Hardware Pair to your build and see how it enhances your platform.