Strike Industries TRIBUS Enhanced Castle Nut and Ext End Plate for AR-15 Rifle, FDE
$59.95 at Ammunition Depot · 11 stores
In stock
Strike Industries AR Enhanced Castle Nut / Extended End Plate Version 5 Red
Strike Industries · Buffer Tubes & Springs
No ratings yetBest price
$59.95at OpticsPlanet
In stock Sale checked Nov 10, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| OpticsPlanet Best price | $59.95Salechecked Nov 10, 2026 | In stock | Buy at OpticsPlanet | |
| MidwayUSA | $59.95checked Nov 10, 2026 | In stock | Buy at MidwayUSA | |
| AR15Discounts | $59.95checked Nov 10, 2026 | Check store | Buy at AR15Discounts | |
| Dirty Bird | $59.95checked Nov 10, 2026 | Check store | Buy at Dirty Bird | |
| Palmetto State Armory | $59.95checked Oct 15, 2026 | Check store | Buy at Palmetto State Armory | |
| Kentucky Gun Co | $59.95checked Nov 10, 2026 | Out of stock | Buy at Kentucky Gun Co |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
Price history
Lowest in-stock price in the last 30 days: $59.95 at MidwayUSA. Dashed line = out of stock. Tracking since Oct 28, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| AR15Discounts | $59.95 | $59.95 | $59.95 |
| Dirty Bird | $59.95 | $59.95 | $59.95 |
| Kentucky Gun Co | $59.95 | $59.95 | $59.95 |
| MidwayUSA | $59.95 | $59.95 | $59.95 |
| OpticsPlanet | $59.95 | $59.95 | $59.95 |
Since Oct 28, 2026.
About this part
The Strike Industries AR Enhanced Castle Nut / Extended End Plate Version 5 Red is a buffer part from Strike Industries. It's sold by 6 stores, all at $59.95. The lowest in-stock price in the last 30 days was $59.95 at MidwayUSA.
Specifications
- Manufacturer
- Strike Industries
From the manufacturer
Strike Industries AR Enhanced Castle Nut / Extended End Plate Version 5 Red One Size. The TRIBUS is next iteration of our previous AR-ECN&EEP. New features include two addition QD mounting points added to the left & right side of the extended end plate. Totaling in 3 QD mounting points. The extended end plate's QD mounts are pushed back away from the webbing of the primary hand allowing for better weapon manipulations in tight spaced and under stress without the startling pain that can result from a pinched hand when using a sling attached to a standard flat QD end plate. Another big improvement is the added anti-rotation castle nut feature. Once installed use the set screw to prevent the castle nut from backing out during weapon usage. The TRIBUS is available in our anodized color line. Specifications for Strike Industries AR Enhanced Castle Nut / Extended End Plate: Manufacturer: Strike Industries Gun Make: AR Platform Quantity: 1 Condition: New Gun Type: Rifle Features of Strike Industries AR Enhanced Castle Nut / Extended End Plate Antiroation Castle Nut 3 QD Mounting Points Extended End Plate for prevention of pinching hand when using a sling attached Staking not required castle nut winot back out once screw is threaded. Package Contents: Strike Industries AR Enhanced Castle Nut / Extended End Plate 1X Extended Castle Nut 1X Extended End Plate 2X M3X12Mm Set Screw 1X1.5Mm Hex Key 1X Warning Card Strike Industries SI-AR-TRIBUS-RED: AR Enhanced Castle Nut & Extended End Plate Version 5 Red One Size
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