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Strike Industries
Overview
The Strike Industries TRIBUS Enhanced Castle Nut and Extended End Plate is designed to provide a more secure and stable attachment point for your stock, thanks to its enhanced design. Crafted from 7075-T6 aluminum, this component ensures durability while maintaining a lightweight profile, which is important for overall build efficiency. This part is commonly found in builds utilizing a mid-length gas system chambered in 5.56 NATO, making it a reliable choice for those configurations.
Strike Industries TRIBUS Enhanced Castle Nut and Ext End Plate for AR-15 Rifle, FDE
Prices checked
Builders on GunPartPicker first added the Strike Industries TRIBUS Enhanced Castle Nut and Ext End Plate for AR-15 Rifle, FDE to a build in January 2026.
Availability is good: it was in stock at one retailer or another nearly every day in October 2026, and today 2 of the 3 retailers we track have it in stock. Prices barely moved in October 2026, holding around $59.95, so there haven't been real sales lately. Buying today, the lowest price is $59.95 at Classic Firearms, which matches the best price we saw in October.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
Builds in the community that include the Strike Industries TRIBUS Enhanced Castle Nut and Ext End Plate for AR-15 Rifle, FDE
| Build | Parts | Total |
|---|---|---|
 | 32 | $7100.16 |
 | 29 | $3873.90 |
 | 22 | $2390.78 |
 | 31 | $3036.30 |
 | 18 | $1299.65 |
 | 32 | $2735.97 |
 | 26 | $3057.45 |
 | 24 | $1743.86 |
 | 24 | $3709.40 |
 | 30 | $4863.57 |
 | 20 | $1254.47 |
 | 22 | $1287.81 |
1 global rating
Top reviews
Strike Industries Tribus enhanced castle nut and end plate in FDE matches my Magpul FDE parts well. Larger wrench notches torque easier than mil-spec castle nuts. End plate has integrated QD recessed into the body for a clean profile.
