Receiver PartsAero PrecisionSold by Brownells

Aero Precision

Ar-15 Recoil Buffer Springs - Carbine Buffer Spring For Ar-15 Ss

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

Mil-spec Carbine

A collapsible buttstock

Mil-spec Rifle

A fixed buttstock

Suitable New

Build or as a direct

Rifle Models

A collapsible stock

Made Usa

$4.99
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SKU: 100054352

Overview

This mil-spec buffer spring is intended for AR15 builds and maintenance, with versions suited to either carbines using a collapsible buttstock or A2 and A4 rifles with a fixed buttstock. It serves well as a replacement for worn parts or as a component for a new build. The rifle-model spring is not for use on carbine models with a collapsible stock, so matching the spring to the correct platform is important. Made in the USA by Aero Precision.

Why Hunters Choose the Aero Precision

Mil-spec Carbine

A collapsible buttstock

Also Offered

As a Mil-Spec rifle spring

Suitable New

Builds or replacing worn-out buffer

Clear Model-specific

Fitment note helps avoid using

Made Usa

By Aero Precision

Key Features

  • Mil-Spec carbine buffer spring for AR15 carbines with a collapsible buttstock.
  • Mil-Spec rifle buffer spring for A2 and A4 AR15 rifles with a fixed buttstock.
  • Suitable for a new build or as a direct replacement for worn parts.
  • Rifle models are not for use on carbine models with a collapsible stock.
  • Made in the USA.
  • Manufactured by Aero Precision.

Best Used For

  • AR-15 carbine owners with a collapsible buttstock needing a Mil-Spec buffer spring replacement
  • Builders assembling a new AR-15 carbine or rifle from compatible Mil-Spec parts
  • A2 or A4 AR-15 rifle owners using a fixed buttstock and rifle buffer spring
  • Shooters replacing worn buffer springs with a direct-fit, model-specific part
  • Users who want a straightforward Aero Precision replacement for compatible AR-15 setups

Specifications

Buffer Spring TypeMil-Spec carbine buffer spring
Compatible Firearm TypeAR15 carbines with a collapsible buttstock
Compatible Rifle TypeA2 and A4 AR15 rifles with a fixed buttstock
Country Of OriginUSA
NoteRifle models not for use on carbine models with a collapsible stock
Use CaseNew build or direct replacement for worn out parts

Pros

  • Mil-Spec carbine spring fits AR15 carbines with a collapsible buttstock.
  • Also offered as a Mil-Spec rifle spring for A2 and A4 fixed-stock rifles.
  • Suitable for new builds or replacing worn-out buffer spring parts.
  • Clear model-specific fitment note helps avoid using the wrong spring.
  • Made in the USA by Aero Precision.

Considerations & Trade-offs

  • This is a Mil-Spec carbine buffer spring, so it is intended for AR15 carbines with a collapsible buttstock rather than fixed-stock rifle setups.
  • The rifle-model version is specifically noted as not for use on carbine models with a collapsible stock, so matching the spring to the stock type is important.
  • It is described as a direct replacement for worn parts, but no performance claims beyond fit and intended use are provided.
  • The product listing does not include detailed dimensions or material specifications, so compatibility should be verified against the build requirements.

Suggested Comparisons

  • AR-15 buffer springs
  • Carbine buffer springs
  • Rifle buffer springs
  • AR-15 replacement parts

Suggested Accessories

  • AR-15 buffer tube assembly
  • AR-15 buffer
  • AR-15 buttstock
  • AR-15 lower receiver parts

Frequently Asked Questions

Which AR-15 setups is this buffer spring intended for?

The product data says the carbine buffer spring is for AR15 carbines with a collapsible buttstock. It also notes a rifle buffer spring version for A2 and A4 AR15 rifles with a fixed buttstock.

Can this be used on a carbine with a collapsible stock?

Yes, the short description identifies the carbine buffer spring as the version for AR15 carbines with a collapsible buttstock. The warning in the data applies to the rifle model, which is not for use on carbine models with a collapsible stock.

Is this a replacement part or only for new builds?

The product 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 the country of origin stated in the product information?

Yes. The short description states that it is made in the USA.