Fortis K1 Lightweight Enhanced AR-15 End Plate – FDE

Upgrade your AR-15 buffer tube assembly with the Fortis K1 Lightweight Enhanced (LE) End Plate in Flat Dark Earth. Engineered for reliability and precision, the Fortis K1 system features a tapered castle nut design that seats and seals itself into place with an ultra-precise snug fit—eliminating the need for staking, ratcheting, or set screws. The result is a castle nut that simply will not back out, giving you confidence in every build and every round fired.

At just 0.59 oz (16.8 grams), the K1 End Plate delivers exceptional lockdown performance without adding unnecessary weight to your rifle. Whether you’re building a competition AR-15, a hunting rifle, or a duty-ready carbine, the Fortis K1 is a drop-in upgrade that reflects the brand’s commitment to innovation, ingenuity, and quality American engineering.

Key Features:
• K1 tapered castle nut system – self-seating and self-sealing fit
• No staking required – eliminates a common point of build frustration
• No ratcheting, no set screws, no backing out
• Ultra-lightweight at only 0.59 oz / 16.8 grams
• Flat Dark Earth (FDE) finish for a tactical aesthetic
• Part of the Fortis Lightweight Enhanced (LE) Castle Nut & End Plate System

Available online at Deep Roots Rifle Co with fast shipping nationwide, or pick one up in person at our Eustis, Florida gun store. Our knowledgeable staff is always on hand to help you select the right components for your next build.