AR-15 Rifle Buffer Spring
$4.99 at Ammunition Depot · 6 stores
In stock
Best price
$4.99at OpticsPlanet
In stock Sale checked Oct 23, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| OpticsPlanet Best price | $4.99Salechecked Oct 23, 2026 | In stock | Buy at OpticsPlanet | |
| KAK Industry | $5.00checked Oct 23, 2026 | Check store | Buy at KAK Industry |
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: $4.99 at OpticsPlanet. Dashed line = out of stock. Tracking since Oct 6, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| KAK Industry | $5.00 | $5.00 | $5.00 |
| OpticsPlanet | $4.99 | $4.99 | $4.99 |
Since Oct 6, 2026.
About this part
The AR-15 Mil-Spec Castle Nut is an AR-15 buffer part from KAK Industry. It's sold by 2 stores (1 in stock), from $4.99 to $5.00. The lowest in-stock price in the last 30 days was $4.99 at OpticsPlanet.
Specifications
- Manufacturer
- KAK Industry
- Platform
- AR-15
- Material
- Steel
From the manufacturer
AR15 MIL-SPEC CASTLE NUT Hardened Steel Staking Cuts Black Oxide Finish
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