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Angstadt Arms

Ar-15 45 Acp Buffer Kit

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

Includes Extended-length

Buffer sized for .45 ACP

Buffer Weight

Is listed at 8.4 oz

Comes Carbine

A carbine buffer spring

Compatible All

All .45 ACP AR-15s

Does Not

Require a buffer spacer

$63.00
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SKU: 100026355

Overview

Built for .45 ACP AR-15 carbines, this buffer kit is intended for builders and shooters who need the proper buffer setup for this platform. It includes an extended-length, correct-weight 8.4 oz. buffer along with a carbine buffer spring, giving you the parts needed for a .45 ACP configuration. Angstadt Arms notes that it is compatible with all .45 ACP AR-15s and does not require a buffer spacer. It is a practical choice whether you are assembling a new carbine or replacing worn components in an existing one.

Why Hunters Choose the Angstadt Arms

Includes Correct

Weight buffer for .45 ACP

Designed Help

.45 ACP AR-15s cycle reliably

Compatible All

All .45 ACP AR-15s

Does Not

Require a buffer spacer

Includes Both

Extended-length buffer and carbine buffer

Key Features

  • Includes an extended-length buffer sized for .45 ACP AR-15 use.
  • Buffer weight is listed at 8.4 oz.
  • Comes with a carbine buffer spring.
  • Compatible with all .45 ACP AR-15s.
  • Does not require a buffer spacer.
  • Designed for new builds or replacing worn parts.

Best Used For

  • Builders assembling a new .45 ACP AR-15 carbine with the correct buffer setup.
  • Owners replacing worn buffer parts in an existing .45 ACP AR-15.
  • Shooters needing a kit compatible with all .45 ACP AR-15s.
  • Users wanting a .45 ACP AR-15 buffer kit that does not require a spacer.

Pros

  • Includes the correct weight buffer for .45 ACP AR-15 carbines.
  • Designed to help .45 ACP AR-15s cycle reliably.
  • Compatible with all .45 ACP AR-15s.
  • Does not require a buffer spacer.
  • Includes both an extended-length buffer and carbine buffer spring.

Considerations & Trade-offs

  • This kit is specific to .45 ACP AR-15 setups, so it is not a general-purpose buffer solution for other calibers or standard rifle/carbine configurations.
  • The package is limited to the buffer and carbine buffer spring; it does not include a buffer spacer, which may matter depending on how your build is set up.
  • It is intended for compatibility with all .45 ACP AR-15s, but the correct fit still depends on the rest of the rifle being configured for that platform.

Suggested Comparisons

  • AR-15 buffer kits
  • .45 ACP AR-15 parts
  • Carbine buffer springs
  • AR-15 build components

Suggested Accessories

  • AR-15 lower parts kit
  • Carbine buffer spring
  • Buffer spacer
  • Armorer's tool

Frequently Asked Questions

What is included in the Angstadt Arms .45 ACP AR-15 Buffer Kit?

The kit includes an extended-length, correct-weight buffer and a carbine buffer spring.

What caliber and platform is this buffer kit intended for?

It is intended for .45 ACP AR-15 carbines and is described as compatible with all .45 ACP AR-15s.

Does this kit require a buffer spacer?

No. The product description states that it does not require the use of a buffer spacer.

Can I use a standard rifle or carbine buffer instead?

The description says a standard rifle or carbine buffer is not going to do the job for this application, which is why this .45 ACP-specific kit is offered.

What is the buffer weight listed for this kit?

The buffer is listed as 8.4 oz.