Receiver PartsAero PrecisionSold by Brownells

Aero Precision

Epc 9 Buffers 7.7oz - Epc 9 Buffer 7.7 Oz

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

Aero Precision

7.7 oz buffer and spring

Includes Enhanced

Carbine Buffer Tube for EPC

Can Be

Purchased as an assembly or

Not Intended

For AR15 or M5 platforms

Stock Not

Included

$40.99
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: 100054506

Overview

Built for Aero Precision EPC setups, this buffer kit is intended to support a dedicated pistol-caliber build rather than standard AR15 or M5 platforms. It pairs the Enhanced Carbine Buffer Tube with a 7.7 oz buffer and spring, and can be purchased as a complete assembly or as the buffer alone. The kit includes a mil-spec receiver end plate and castle nut, while the stock is not included. For 40 S&W, 10mm, or .45 ACP builds, Aero Precision notes that a heavier buffer spring is recommended.

Why Hunters Choose the Aero Precision

Specifically Optimized

For use in the Aero

Available As

Complete assembly or buffer alone

Includes Enhanced

Carbine Buffer Tube and 308

Package Also

Includes Mil-Spec receiver end plate

Clear Platform

Limitation: not intended for AR15

Key Features

  • Aero Precision EPC buffer kit with 7.7 oz buffer and spring
  • Includes Enhanced Carbine Buffer Tube for EPC use
  • Can be purchased as an assembly or buffer alone
  • Not intended for AR15 or M5 platforms
  • Stock not included
  • For 40S&W, 10mm, or 45ACP builds, a heavier buffer spring is recommended

Best Used For

  • EPC owners building or maintaining an Aero Precision EPC setup
  • Users assembling a 40S&W, 10mm, or 45ACP EPC build
  • Buyers needing the buffer kit as a complete assembly or buffer alone
  • Hunters and shooters who want a buffer intended specifically for EPC platforms

Specifications

308 Carbine Buffer SpringIncluded
Buffer KitYes
Compatible PlatformsAero Precision EPC
Enhanced Carbine Buffer TubeIncluded
Epc Buffer Weight7.7 oz
Heavier Buffer Spring RecommendationYes
Intended UseAero Precision EPC
Mil Spec Castle NutIncluded
Mil Spec Receiver End PlateIncluded
Not Intended ForAR15 or M5 platforms
Purchase OptionsAssembly or buffer alone
Recommended For Builds40S&W, 10mm, or 45ACP build
Stock IncludedNo

Pros

  • Specifically optimized for use in the Aero Precision EPC.
  • Available as a complete assembly or buffer alone.
  • Includes Enhanced Carbine Buffer Tube and 308 Carbine Buffer Spring.
  • Package also includes Mil-Spec receiver end plate and castle nut.
  • Clear platform limitation: not intended for AR15 or M5 builds.
  • Stock is not included, allowing separate stock selection.

Considerations & Trade-offs

  • Designed specifically for the Aero Precision EPC, so it is not a general-purpose option for AR15 or M5 platforms.
  • The 7.7 oz buffer and added length are not compatible with standard cycling requirements outside the intended EPC setup.
  • Stock is not included, so the kit still requires a separate stock purchase to complete the build.
  • For 40S&W, 10mm, or 45ACP builds, Aero Precision recommends a heavier buffer spring, which may affect setup choices.

Suggested Comparisons

  • AR-style buffer kits
  • Carbine buffer tubes
  • Buffer springs
  • Pistol-caliber carbine build components

Suggested Accessories

  • Stock
  • Buffer spring
  • Receiver end plate
  • Castle nut

Frequently Asked Questions

What platform is this buffer kit intended for?

It is specifically optimized for use in the Aero Precision EPC.

Can this 7.7 oz EPC buffer be used in an AR15 or M5 build?

No. The source data states it is not intended for use in AR15 or M5 platforms, and that its additional length and weight will not allow proper cycling of standard platforms.

What is included in the buffer kit?

The kit includes the EPC buffer, a .308 carbine buffer spring, an enhanced carbine buffer tube, a mil-spec receiver end plate, and a mil-spec castle nut. The stock is not included.

Is the buffer available by itself?

Yes. The product can be purchased as an assembly or as the buffer alone.

Is there any note for 40S&W, 10mm, or 45ACP builds?

Yes. The source data says that for use in a 40S&W, 10mm, or 45ACP build, a heavier buffer spring is recommended.