Best price
$9.99at Brownells
In stock Lowest in 30 dayschecked Nov 13, 2026
Specifications
- Manufacturer
- KNS Precision
- Platform
- AR-15
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| Brownells Best price 17.76% off · ends Nov 15 · exclusions apply | $9.99checked Nov 13, 2026 | In stock | Buy at Brownells | |
| GunMag Warehouse | $10.99checked Nov 13, 2026 | In stock | Buy at GunMag Warehouse | |
| Ammunition Depot | $16.49checked Nov 13, 2026 | In stock | Buy at Ammunition Depot | |
| AR15Discounts 5% off | $9.00checked Nov 13, 2026 | Check store | Buy at AR15Discounts | |
| Battlehawk Armory | $9.15Salechecked Nov 13, 2026 | Check store | Buy at Battlehawk Armory | |
| Dirty Bird | $10.00checked Nov 13, 2026 | Check store | Buy at Dirty Bird | |
| Palmetto State Armory | $10.99checked Nov 13, 2026 | Check store | Buy at Palmetto State Armory | |
| GrabAGun | $11.09checked Nov 13, 2026 | Check store | Buy at GrabAGun |
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: $9.99 at Brownells. Dashed line = out of stock. Tracking since Sep 27, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| AR15Discounts | $9.00 | $9.00 | $9.00 |
| Ammunition Depot | $16.49 | $15.49 | $18.99 |
| Battlehawk Armory | $9.15 | $9.15 | $9.40 |
| Brownells | $9.99 | $9.99 | $9.99 |
| Dirty Bird | $10.00 | $10.00 | $10.00 |
| GrabAGun | $11.09 | $11.09 | $11.09 |
| GunMag Warehouse | $10.99 | $10.99 | $10.99 |
| Palmetto State Armory | $10.99 | $10.99 | $10.99 |
Since Sep 27, 2026.
About this part
The AR-15 Perma Pin Firing Pin Retainer is an accessory from KNS Precision. It's sold by 8 stores (3 in stock), from $9.00 to $16.49. The lowest in-stock price in the last 30 days was $9.99 at Brownells.
From the manufacturer
The KNS Precision AR-15 Perma Firing Pin Retainer was inspired by the design of the retaining pin found in the original AR-15 prototype developed by Eugene Stoner. The pin retainer ensures that the firing pin remains secured into place and works with any standard AR-15 bolt-carrier group. The pin retainer is made from heat-treated steel, which provides flexibility and strength. The pin cannot be used on .308 bolt-carrier groups.
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