Strike Industries AR Enhanced Castle Nut / Extended End Plate Version 3 Blue
$57.99 at GunMag Warehouse · 8 stores
In stock
Strike Industries AR Enhanced Castle Nut / Extended End Plate Version 4 FDE
Strike Industries · Buffer Tubes & Springs
No ratings yetBest price
$57.99at GunMag Warehouse
In stock checked Nov 8, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| GunMag Warehouse Best price | $57.99checked Nov 8, 2026 | In stock | Buy at GunMag Warehouse | |
| Ammunition Depot | $59.95checked Nov 9, 2026 | In stock | Buy at Ammunition Depot | |
| MidwayUSA | $59.95checked Nov 10, 2026 | In stock | Buy at MidwayUSA | |
| Kentucky Gun Co | $59.95checked Nov 10, 2026 | In stock | Buy at Kentucky Gun Co | |
| 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 Nov 8, 2026 | Check store | Buy at Palmetto State Armory | |
| OpticsPlanet | $61.99Salechecked Nov 10, 2026 | Out of stock | Buy at OpticsPlanet |
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: $57.99 at GunMag Warehouse. 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 |
| Ammunition Depot | $59.95 | $59.95 | $59.95 |
| Dirty Bird | $59.95 | $59.95 | $59.95 |
| GunMag Warehouse | $57.99 | $57.99 | $57.99 |
| Kentucky Gun Co | $59.95 | $59.95 | $59.95 |
| MidwayUSA | $59.95 | $59.95 | $59.95 |
| OpticsPlanet | $61.99 | $59.95 | $66.49 |
| Palmetto State Armory | $59.95 | $59.95 | $59.95 |
Since Oct 28, 2026.
About this part
The Strike Industries AR Enhanced Castle Nut / Extended End Plate Version 4 FDE is a buffer part from Strike Industries. It's sold by 8 stores (4 in stock), from $57.99 to $61.99. The lowest in-stock price in the last 30 days was $57.99 at GunMag Warehouse.
Specifications
- Manufacturer
- Strike Industries
From the manufacturer
Strike Industries AR Enhanced Castle Nut / Extended End Plate Version 4 FDE 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-FDE: AR Enhanced Castle Nut & Extended End Plate Version 4 FDE One Size
Similar buffer parts
Strike Industries TRIBUS Enhanced Castle Nut and Ext End Plate for AR-15 Rifle, FDE
$59.95 at Ammunition Depot · 11 stores
In stock
Buffer Tube AR-15/M16/M4 Stock Hardwear Mounting Kit, Mil-Spec
$57.95 at Ammunition Depot · 11 stores
In stock
AR-15 Premium Buffer Tube Black
$57.80 at MidwayUSA · 8 stores
In stock Sale
Rating
No ratings yet
Log in to rate this part.
Comments
Please log in to read and leave comments.