Fortis Light Weight K1 Castle Nut and End Plate Black, Gray - LEBLKK1GRY

Fortis Manufacturing Fortis Light Weight K1 Castle Nut and End Plate Black, Gray - LEBLKK1GRY
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Fortis Manufacturing

Overview

The Fortis Light Weight K1 Castle Nut and End Plate is designed from 7075-T6 aluminum and features a hardcoat anodized finish for added durability. This enhanced type castle nut and end plate set provides a secure attachment point for the buffer tube, ensuring stability during operation and minimizing slippage. You'll often find this product in builds utilizing a mid-length gas system chambered in 5.56 NATO, making it a practical choice for those configurations.

Specifications

MPNLEBLKK1GRY
TypeEnhanced
ColorBlack
FinishHardcoat Anodized
Material7075-T6 Aluminum

Available Merchants(3)

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Optics Planet
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Builds Featuring This Part

See all 10

Builds in the community that include the Fortis Light Weight K1 Castle Nut and End Plate Black, Gray - LEBLKK1GRY

BuildPartsTotal
PDW 16" 5.56
18$1176.15
DMR 20" 5.56
21$2961.37
SBR 8" 5.56
24$3776.20
14.5"
35$3200.74
16" radian weapons build
29$4905.20
fn america 20" .350 legend
18$2072.04
12.5" aero precision clone
16$1231.10
16.1" aero precision SBR
20$1523.37
for a duty rifle 16"
27$2159.30
For 2 gun 14.5"
22$1370.90

Customer reviews

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Top reviews

O
orkaydk98
K1 castle plate combo gray
Reviewed on April 2, 2026Verified with Build

Fortis K1 castle nut and end plate combo in gray is a unique color option. The lightweight castle nut is hollowed out which saves a couple grams. End plate has the integrated QD point. Took the standard AR15 wrench just fine, torqued to spec.

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P
PatchMe556
Fortis K1 gray Castle plate
Reviewed on March 26, 2026Verified with Build

Fortis K1 lightweight castle nut and end plate in gray is a unique color option. Castle nut has the larger wrench notches for easier torquing. End plate has integrated QD socket. Anti-rotation flange seats correctly. Gray accents work well.

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