The PWS Ratchet Lock Castle Nut and End Plate set (brand part no. RLCNKIT) replaces a rifle’s standard castle nut and end plate with a ratcheting design that locks down without staking. It works with either mil-spec or commercial buffer tubes, so it drops into most AR-15 and AR-10 stock setups as a straightforward upgrade. The end plate includes a QD sling mount point, adding a sling attachment option most factory end plates do not offer. Installation follows the same steps as a standard castle nut and end plate, with no special tools beyond what a normal buffer tube swap requires.

Key Specifications

• Compatibility: mil-spec or commercial buffer tubes.
• Function: ratcheting design, eliminates the need to stake the castle nut.
• QD mount: integrated QD sling mount point, built into the end plate.
• Installation: works with any buffer tube, using standard installation steps.

Frequently Asked Questions

Does this fit commercial buffer tubes? Yes, it works with both mil-spec and commercial buffer tubes.

Does it have a sling mount? Yes, it includes a QD sling mount point.

Buy the PWS Ratchet Lock Castle Nut and End Plate Set

Skip the staking and add a QD sling point in one upgrade — order the Ratchet Lock set from Schaefer Defense and browse our full rifle parts selection for more buffer tube hardware. Ships fast from our Lubbock, Texas gun shop.