Fortis K2 Enhanced End Plate with Locking Lever and Castle Nut

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Ratcheting AR-15 Endplate and Castle Nut

The K2 castle nut and endplate from Fortis features a locking lever to ensure your buffer tube never backs out, without need for staking or threadlocker. The robust yet lightweight endplate has a built-in QD socket for sling swivels, and retains an anodized castle nut with audible and tactile locking. This systems ends up secure and robust, and unlike other ratchet systems, can be easily uninstalled if you choose.

You can check out how the K2 system works in the video below, as well as the K1 friction-fit castle nut and endplate.

Watch video: Quick Product Highlight Fortis K1 & K2 Castle Nut and Endplate System

Features

Lightweight design at only .53 oz / 15 grams total
Castle nut and end plate are 7075 T6 Aircraft Grade Aluminum
Quick Detach Socket – 360º rotational locking interface
Ratcheting design allows easy installation and removal
Made in the USA

Specifications

Material: 7075-T6 Aluminum
Finish: Hardcoat anodized
Weight: .53 oz. Total

All 7 options on this page

Fortis K2 Enhanced End Plate with Locking Lever and Castle Nut - Color: Black | SKU: LE-BLK-K2-BLK
Fortis K2 Enhanced End Plate with Locking Lever and Castle Nut - Color: Flat Dark Earth | SKU: LE-BLK-K2-FDE
Fortis K2 Enhanced End Plate with Locking Lever and Castle Nut - Color: OD Green | SKU: LE-BLK-K2-ODG
Fortis K2 Enhanced End Plate with Locking Lever and Castle Nut - Color: Gray | SKU: LE-BLK-K2-GRY
Fortis K2 Enhanced End Plate with Locking Lever and Castle Nut - Color: Gold | SKU: LE-BLK-K2-GLD
Fortis K2 Enhanced End Plate with Locking Lever and Castle Nut - Color: Red | SKU: LE-BLK-K2-RED
Fortis K2 Enhanced End Plate with Locking Lever and Castle Nut - Color: Blue | SKU: LE-BLK-K2-BLU

this end plate with castle nut works great and looks great

AT3 Tactical · Thank you for leaving a positive review for our Fortis K2 Enhanced End Plate with Locking Lever and Castle Nut. We are glad to hear that it not only functions well, but also adds to the appearance of your product. We appreciate your support and hope you continue to enjoy using it.

I installed using the instructions found on the Fortis MFG youtube channel. Hand tightened, then (with a Real Avid armorer's wrench) tightened to two clicks. Immediately, I noticed that the buffer tube rotated slightly very easily. Maybe not tight enough. Then I tried to go to three clicks -- the castle nut turned under the lips on the end-plate and pushed the armorer's wrench off of the nut. This caused the nut to get dinged up a little. At three clicks, the buffer tube still rotated slightly. I knew that I would have to remove this and try this on another lower (just to be sure it wan't a problem with a specific lower). Removal caused the castle nut to ding up further. I tried it on a second lower with the same issue at two clicks. Removed and went back to mil-spec with no issues.

AT3 Tactical · So sorry to hear about the issue, PLJ. Please reply to us via email we'd like to further help.

I'm not military, just a guy who likes to build MSR's. This is #7. Can't go wrong with this product. Buy it.

AT3 Tactical · Thanks for sharing your feedback! We're glad you're satisfied with your purchase.

Product was easy to install and works great, no need for staking. A little on the pricey side but it’s a quality product that looks good, does the job and easy to remove if needed. Recommend

AT3 Tactical · Thanks for sharing your feedback! We're glad you're satisfied with your purchase.

Easy way to install and remove castle nut. No torqued, threadlocker, staking needed. To me that is worth the price, also looks cool...

AT3 Tactical · Thanks for sharing your feedback! We're glad you're satisfied with your purchase.

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90-day no-hassle returns

The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.