• Locking lever K2 system eliminates the risk of your castle nut ever backing out
  • Ultra precision fit allows the castle nut to seat itself into place without the need of staking the end plate
  • No set screws or ratcheting systems that can't be reused
  • Quick Detach Socket - 360º rotational locking interface


  • Material: 7075-T6 Aluminum
  • Finish: Anodized Black or Gold
  • Weight:
    • Endplate: 0.39 oz.
    • Castle Nut: 0.14 oz.


  • AR-15 and AR-10

**Anodized areas that touch between the end plate and castle nut will have expected minor scratches from torquing of the castle nut.

**Due to various factors that take place during the anodization process, the color lines from batch to batch of a certain product may vary.


  • 1x Fortis Lightweight Enhanced K2 Locking Lever End Plate
  • 1x Fortis K2 Locking Lever Castle Nut


Are you the shooter out there who jumps on something new for no other reason than it is the latest thing? Well, sometimes the latest thing isn't necessarily a good thing. However, in this case, the latest thing from Fortis is definitely a good thing. The Fortis K2 Castle Nut locking system will quickly become the new industry standard.

No More Staking with The New Fortis K2 Locking Lever End Plate and Castel Nut System

Ever since the AR-15 has been around people have been making basically the same end plate and castle nut. Of course, some are different colors and made of different metal, but all of them were really the same, until now. The Fortis Lightweight Enhanced End Plate and gold castle nut have completely changed the way you can secure your receiver extension. By thinking outside of the box, Fortis came up with a system where you will never have to stake your Fortis K2 Castle Nut again.

Every Scar Should Have A Story

Granted, if you use your gun, it's going to wind up with some battle scars. What really makes you sick is when you scuff it up because of a slip-up, and you have no cool tale to tell. The Fortis Lightweight Enhanced K2 End Plate has a locking-lever system. Once you have the castle nut torqued in place, the locking-lever in the end plate engages slots in the Fortis K2 Castle Nut. There, you have just secured the Fortis Lightweight Enhanced End Plate and castle nut without staking anything. Using this set-up there is no chance to slip and scratch your receiver. It's right, it's tight, and it's good to go.

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Reviews (3)

  • Fortis quality

    Posted by Rick on 14th Nov 2021

    Solid, gorgeous piece. The QD hole is a solid fit and ratchet castle nut ensures it doesn't come loose. Did i mention its gorgeous.


    Posted by Carlos P. on 6th Jun 2021

    Works great and keeps the castle nut tight!

  • Fortis LE Lightweight Locking Lever K2 End Plate

    Posted by Carlos Perez on 30th May 2021

    Great product! Castle nut “locks” as described and keeps a tight fit on the buffer tube. You don’t have to worry about staking the castle nut since it keeps it locked in to the latch plate.