Image unavailable
Ar .308 Buffer Springs - Ar .308 Carbine Spring Ss
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$5.99
View on Brownells
You'll be taken to Brownells to complete your purchase.
Hunter's Outpost earns a commission from affiliate links at no extra cost to you.
SKU: 100054354
Overview
Built for .308 AR setups, this buffer spring is intended for either a new build or replacing a worn part in an existing rifle. The carbine version is for .308 ARs with a collapsible buttstock, while the rifle version is for .308 ARs with a fixed buttstock. It is a straightforward component choice for shooters who need the correct spring type for their stock configuration, with the important note that the rifle spring will not work in .308 carbines with a collapsible stock.
Why Hunters Choose the Aero Precision
Suitable New
Builds or replacing worn-out parts
.308 Ars
A collapsible buttstock
Rifle Version
A fixed buttstock
Made Usa
Clear Fitment
Note helps avoid stock compatibility
Key Features
- M5 .308 carbine buffer spring for .308 ARs with a collapsible buttstock
- M5 .308 rifle buffer spring for .308 ARs with a fixed buttstock
- Suitable for a new build or as a direct replacement part
- Designed for .308 AR platform use
- Made in the USA
- Rifle spring will not work with .308 carbines using a collapsible stock
Best Used For
- Builders assembling a .308 AR with a collapsible buttstock and matching carbine spring
- Owners replacing a worn .308 AR buffer spring during routine maintenance
- Shooters setting up a .308 AR with a fixed buttstock and rifle spring
- Users needing a direct replacement part for an Aero Precision M5 .308 build
- Buyers who want a simple, stock-specific spring choice without guesswork
Specifications
| Blade Finish | SS |
|---|---|
| Compatibility | M5 .308 AR's with a collapsible buttstock; M5 .308 AR's with a fixed buttstock |
| Made In Usa | Yes |
| Model | M5 .308 |
| Type | Buffer spring |
Pros
- Suitable for new builds or replacing worn-out parts.
- Designed for .308 ARs with a collapsible buttstock.
- Rifle version available for .308 ARs with a fixed buttstock.
- Made in the USA.
- Clear fitment note helps avoid stock compatibility mistakes.
Considerations & Trade-offs
- The spring must match the stock configuration: the carbine version is for .308 ARs with a collapsible buttstock, while the rifle version is for fixed buttstocks.
- The rifle spring is not compatible with .308 carbines that use a collapsible stock, so fitment should be confirmed before ordering.
- This is a replacement or build component, so it addresses a specific buffer-spring need rather than serving as a universal .308 AR part.
Suggested Comparisons
- AR-10/.308 buffer springs
- AR-10/.308 buffer system components
- AR-10/.308 lower receiver parts
- AR-10/.308 stock and recoil parts
Suggested Accessories
- Buffer tube assembly
- Carbine stock
- Fixed stock
- Lower receiver parts kit
Frequently Asked Questions
What type of .308 AR stock setup is this buffer spring for?
The product data lists two options: an M5 .308 carbine buffer spring for .308 ARs with a collapsible buttstock, and an M5 .308 rifle buffer spring for .308 ARs with a fixed buttstock.
Can I use the rifle spring in a .308 carbine with a collapsible stock?
No. The source data specifically notes that the rifle spring will not work with .308 carbines that have a collapsible stock.
Is this intended as a replacement part or only for new builds?
It is described as suitable for either a new build or as a direct replacement for worn-out parts.
Who makes this buffer spring?
The manufacturer listed in the product data is Aero Precision.
Is this product made in the USA?
Yes. The source data states that it is made in the USA.