Tacfire 6-Position Buffer Tube Spring for AR-15 .223 Rem/5.56 Rifle, Black
$2.99 at Sportsman's Warehouse · 6 stores
In stock
PSA AR15 CAR Stock Lock Ring/Castle Nut
Palmetto State Armory · Buffer Tubes & Springs
No ratings yetBest price
$2.99at Palmetto State Armory
checked Oct 2, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| Palmetto State Armory | $2.99checked Oct 2, 2026 | Check store | Buy at Palmetto State Armory |
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
Dashed line = out of stock. Tracking since Sep 28, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Palmetto State Armory | $2.99 | $2.99 | $2.99 |
Since Sep 28, 2026.
About this part
The PSA AR15 CAR Stock Lock Ring/Castle Nut is an AR-15 buffer part from Palmetto State Armory. One store lists it, Palmetto State Armory at $2.99.
Specifications
- Manufacturer
- Palmetto State Armory
- Platform
- AR-15
From the manufacturer
PSA AR15 CAR Stock Lock Ring/Castle Nut - 412
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