Strike Industries AR Pistol Flat Wire Spring 10 in Stainless Steel
$14.95 at MidwayUSA · 7 stores
In stock
Best price
$12.95at Kentucky Gun Co
Out of stock checked Nov 10, 2026
In stock now instead
- Strike Industries AR Pistol Flat Wire Spring 10 in Stainless St… $14.95at MidwayUSA
- AR-15 Buffer Housing Only Mil-Spec Blue $16.95at MidwayUSA
- Timber Creek Quick Disconnect End Plate Blue Standard QD EP $12.99at GunMag Warehouse
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| Kentucky Gun Co Best price | $12.95checked Nov 10, 2026 | Out of stock | Buy at Kentucky Gun Co | |
| OpticsPlanet | $13.99checked 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.
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Price history
Dashed line = out of stock. Tracking since Oct 28, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Kentucky Gun Co | $12.95 | $12.95 | $12.95 |
| OpticsPlanet | $13.99 | $13.99 | $13.99 |
Since Oct 28, 2026.
About this part
The Strike Industries AR Castle Nut Black is an AR-10 buffer part from Strike Industries. It's sold by 2 stores, from $12.95 to $13.99.
Specifications
- Manufacturer
- Strike Industries
- Platform
- AR-10
From the manufacturer
Strike Industries AR Castle Nut Black One Size. Its manganese phosphate finish provides an attractive matte black appearance and excellent resistance to corrosion and wear. When paired with the Strike Industries Multi-Function End Plate there's no need for peening or staking simplifying installation. Additionally the nut features wrench cutouts for easy installation with a castle nut wrench and its Mil-Spec dimensions ensure compatibility with AR-15 and AR-10 receiver extensions/buffer tubes. Start your new build or enhance a current rifle setup with the Strike AR Castle Nut so the receiver extension/buffer tube stays in place during operation. Specifications for Strike Industries AR Castle Nut: Manufacturer: Strike Industries Color: Black Features of Strike Industries AR Castle Nut No peening or staking needed when paired with SI Multi-Function End Plate Heat-treated surface to 45-50 HRC Manganese phosphate finish Castle nut wrench cutouts for installation Mil-Spec dimensions for AR-15/AR-10 receiver extensions/buffer tubes Package Contents: Strike Industries AR Castle Nut Strike Industries SI-AR-ACN-BK: AR Castle Nut Black One Size
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