Fortis Light Weight K1 Castle Nut and End Plate Black, Flat Dark Earth - LEBLKK1FDE
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Fortis Manufacturing
Overview
The Fortis Light Weight K1 Castle Nut and End Plate in Flat Dark Earth is an enhanced type designed for secure attachment of the buffer tube to the lower receiver. This component features a lightweight construction that minimizes additional weight on your build without sacrificing durability, making it ideal for streamlined setups. It commonly appears in mid-length gas system builds chambered in 5.56 NATO, where performance and weight savings are key priorities.
Specifications
Fortis Light Weight K1 Castle Nut and End Plate Black, Flat Dark Earth - LEBLKK1FDE
Available Merchants(4)
Prices checked
Stock Alert
Build history on GunPartPicker
It was in stock most times we checked in October 2026, but today none of the 4 retailers we track has it in stock right now. Prices barely moved in October 2026, holding around $37.95, with no real sale all month. Listed prices start at $37.95 at BattleHawk Armory for when it comes back.
Prices checked · refreshed daily across 37 retailers
Builds Featuring This Part
See all builds →Builds in the community that include the Fortis Light Weight K1 Castle Nut and End Plate Black, Flat Dark Earth - LEBLKK1FDE
| Build | Parts | Total |
|---|---|---|
 | 22 | $2318.69 |
 | 26 | $4598.70 |
 | 26 | $1853.66 |
 | 26 | $1887.76 |
 | 22 | $1012.87 |
 | 27 | $4259.56 |
 | 32 | $5965.51 |
 | 21 | $1343.22 |
| 17 | $980.26 |
 | 27 | $1531.96 |
| 16 | $607.13 |
 | 25 | $2848.39 |
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