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Strike Industries
Overview
The Strike Industries Tribus Enhanced AR-15 Castle Nut and End Plate is designed to provide a secure attachment point for your buffer tube assembly while enhancing the overall stability of your rifle. Made from durable 6061-T6 aluminum and featuring a hardcoat anodized finish, this castle nut and end plate combination ensures longevity and resistance to wear. This product is commonly found in builds utilizing a mid-length gas system and chambered in 5.56 NATO, making it a popular choice among builders aiming for reliable performance and ease of installation.
Strike Industries Tribus Enhanced AR-15 Castle Nut and End Plate - Black
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Builders on GunPartPicker first added the Strike Industries Tribus Enhanced AR-15 Castle Nut and End Plate - Black to a build in February 2026.
Updated · from real builds on GunPartPicker
Builds in the community that include the Strike Industries Tribus Enhanced Ar-15 Castle Nut and End Plate - Black
| Build | Parts | Total |
|---|---|---|
 | 29 | $2695.67 |
 | 21 | $1816.06 |
 | 18 | $1475.88 |
 | 24 | $6565.51 |
 | 23 | $1930.98 |
 | 22 | $1739.78 |
 | 33 | $2969.98 |
 | 21 | $1142.27 |
 | 17 | $871.86 |
 | 33 | $2969.98 |
 | 26 | $2733.61 |
 | 21 | $1527.05 |
2 global ratings
Top reviews
Strikes Tribus enhanced castle nut and end plate in black is the same as the FDE I bought for another build, just in black. The castle nut has the larger wrench notches which makes torque easier. End plate has built-in QD socket recessed into the body.
Strike Tribus enhanced castle nut and end plate in black is exactly what I wanted for a black build. Larger wrench notches torque easier. End plate has integrated QD recessed into the body. Anti-rotation flange seats positively.