Fortis K1 AR-15 Enhanced End Plate Castle Nut Combo, OD Green - LEBLKK1ODG
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Fortis Manufacturing
Overview
The Fortis K1 AR-15 Enhanced End Plate Castle Nut Combo is designed to provide a robust and reliable attachment point for your buffer tube, made from durable 7075-T6 aluminum for added strength. Its enhanced design ensures a secure fit while reducing the risk of loosening over time, which is particularly beneficial for builders focused on performance and longevity in their setups. This end plate is commonly found in builds featuring a mid-length gas system and chambered in 5.56 NATO, making it a practical choice for a wide range of applications.
Specifications
Fortis K1 AR-15 Enhanced End Plate Castle Nut Combo, OD Green - LEBLKK1ODG
Available Merchants(5)
Prices checked
Stock Alert
October 2026 on GunPartPicker
Fortis K1 AR-15 Enhanced End Plate Castle Nut Combo, OD Green - LEBLKK1ODG was the ninth most added end plate on GunPartPicker in October 2026, behind the Strike Industries Multi-Function End Plate With Anti-Rotation Castle Nut - Black, with about 2% of all end plates added to builds. Down from #8 in September. Builds with this end plate are mostly chambered in 5.56 NATO (67%, then .223 Wylde 14%), mostly on mid-length gas (62%, then carbine-length 23%), and nearly all AR-15.
It was out of stock everywhere we track for all of October 2026, and today none of the 5 retailers we track has it in stock right now. Listed prices start at $37.95 at Primary Arms for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
PlatformBased on real build data showing which platform (AR-15, AR-10, AR-9) builders pair with this product.
CaliberBased on real build data showing which calibers builders choose alongside this product.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
Builds Featuring This Part
See all builds →Builds in the community that include the Fortis K1 AR-15 Enhanced End Plate Castle Nut Combo, OD Green - LEBLKK1ODG
| Build | Parts | Total |
|---|---|---|
 | 23 | $1879.02 |
 | 23 | $1560.11 |
 | 27 | $1335.36 |
 | 28 | $1112.38 |
 | 24 | $1011.18 |
 | 25 | $1056.67 |
 | 26 | $2656.62 |
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