The Fortis Lightweight Enhanced End Plate (brand part no. LE-BLK-K1-BLK) uses Fortis Manufacturing’s K1 system, built around a tapered castle nut that seals itself onto the end plate. That ultra-precision, snug fit lets the castle nut seat and lock into place on its own, without staking the end plate the way a traditional mil-spec setup requires. There is no ratcheting sound, no set screws to back out under recoil, and no failure point that comes from a loose castle nut working itself free over time. It is a cleaner, more reliable way to finish the receiver extension on an AR-15 lower build, finished in black.

Key Specifications

• Uses the K1 system with a tapered castle nut that self-seals to the end plate.
• Requires no staking of the end plate, unlike a traditional mil-spec setup.
• Eliminates ratcheting, set screws, and backing out under recoil.
• Finished in black.

Frequently Asked Questions

Does this end plate need to be staked? No, the K1 system’s tapered castle nut seals itself into place without staking.

What color is it finished in? Black.

What problem does the K1 design solve? It removes the ratcheting, set screws, and loosening failure points found in traditional castle nut setups.

Buy the Fortis Lightweight Enhanced AR-15 End Plate, Black

Order this Fortis end plate from Fortis Manufacturing through our AR-15 buffer systems lineup. It ships fast from our Lubbock, Texas gun shop, fully insured.