AR-308 Carbine Buffer Spring
$4.39 at Brownells · 5 stores
In stock
Best price
$4.49at GunMag Warehouse
In stock checked Oct 1, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| GunMag Warehouse Best price | $4.49checked Oct 1, 2026 | In stock | Buy at GunMag Warehouse | |
| MidwayUSA | $5.49checked Oct 1, 2026 | In stock | Buy at MidwayUSA | |
| Brownells | $5.69checked Oct 1, 2026 | In stock | Buy at Brownells | |
| OpticsPlanet | $5.89Salechecked Oct 1, 2026 | In stock | Buy at OpticsPlanet | |
| Sportsman's Warehouse | $5.99checked Oct 1, 2026 | In stock | Buy at Sportsman's Warehouse | |
| Ammunition Depot | $13.99checked Oct 1, 2026 | In stock | Buy at Ammunition Depot | |
| Palmetto State Armory | $5.39checked Oct 1, 2026 | Check store | Buy at Palmetto State Armory | |
| CMMG | $5.95checked Oct 1, 2026 | Check store | Buy at CMMG |
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: $4.49 at GunMag Warehouse. Dashed line = out of stock. Tracking since Sep 27, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Ammunition Depot | $13.99 | $13.99 | $13.99 |
| Brownells | $5.69 | $5.69 | $5.69 |
| CMMG | $5.95 | $5.95 | $5.95 |
| GunMag Warehouse | $4.49 | $4.49 | $4.49 |
| MidwayUSA | $5.49 | $5.49 | $5.49 |
| OpticsPlanet | $5.89 | $5.89 | $5.89 |
| Palmetto State Armory | $5.39 | $5.39 | $5.39 |
| Sportsman's Warehouse | $5.99 | $5.99 | $5.99 |
Since Sep 27, 2026.
About this part
The AR-15 Carbine Spring Action is an AR-15 buffer part from CMMG. It's sold by 8 stores (6 in stock), from $4.49 to $13.99. The lowest in-stock price in the last 30 days was $4.49 at GunMag Warehouse.
Fits and works with
- Buffer system
- Carbine · Buffers and springs
Specifications
- Manufacturer
- CMMG
- Type
- Spring
- Platform
- AR-15
From the manufacturer
When combined with a carbine-style buffer, this carbine-style spring is perfect for installation into a traditional, carbine-length receiver extension for your AR-15 build. The weight and resistance of this spring-and-buffer combination provides the balance needed to ensure reliable operation with any carbine-length gas system. Mfg: Cmmg
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