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Epc/Ar9 Buffer And Kit - Epc/Ar9 9mm Luger Buffer Kit For Ar-15
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$129.99
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SKU: 430108379
Overview
Built for a dedicated EPC setup, this buffer kit pairs Aero Precision’s Enhanced Carbine Buffer Tube with an 8.1 oz buffer and spring for use in the Aero Precision EPC platform. It is not intended for standard AR-15 or M5 builds, as the added length and weight are designed around the EPC’s specific cycling requirements. 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 recommends a heavier buffer spring.
Why Hunters Choose the Aero Precision
Includes Aero
Precision Enhanced Carbine Buffer Tube,
Configured Specifically
For use in the Aero
Available As
Complete assembly or as the
Kit Includes
8.1 oz EPC buffer and
Mil-spec Receiver
End plate and castle nut
Key Features
- Aero Precision EPC buffer kit for EPC builds
- Includes Enhanced Carbine Buffer Tube, EPC buffer, and 308 carbine buffer spring
- Uses an 8.1 oz EPC buffer
- Includes mil-spec receiver end plate and castle nut
- Stock not included
- Not intended for AR-15 or M5 platforms
Best Used For
- Builders assembling an Aero Precision EPC 9mm Luger setup with the matching buffer kit
- Users needing the Enhanced Carbine Buffer Tube, buffer, spring, end plate, and castle nut together
- AR-15 builders working on EPC-specific configurations, not standard AR15 or M5 platforms
- Owners planning a 40S&W, 10mm, or 45ACP build who may need a heavier buffer spring
- Buyers who want the buffer assembly or buffer alone for an EPC-focused build
Specifications
| Assembly Option | Can be purchased as an assembly, or as the buffer alone |
|---|---|
| Buffer Spring | 308 Carbine Buffer Spring |
| Buffer Tube | Enhanced Carbine Buffer Tube |
| Buffer Weight | 8.1oz |
| Caliber Notes | For use in a 40S&W, 10mm, or 45ACP build we recommend the use of a heavier buffer spring |
| Castle Nut | Mil-Spec Castle Nut |
| Intended Use | Specifically optimized for use in the Aero Precision EPC |
| Platform Compatibility | Not intended for use in AR15 or M5 platforms |
| Receiver End Plate | Mil-Spec Receiver End Plate |
| Stock Included | No |
Pros
- Includes Aero Precision Enhanced Carbine Buffer Tube, buffer, spring, end plate, and castle nut.
- Configured specifically for use in the Aero Precision EPC platform.
- Available as a complete assembly or as the buffer alone.
- Kit includes an 8.1 oz EPC buffer and 308 carbine buffer spring.
- Mil-spec receiver end plate and castle nut are included.
- Stock is not included, allowing separate stock selection.
Considerations & Trade-offs
- Intended for Aero Precision EPC use; the 8.1 oz buffer is not intended for standard AR15 or M5 platforms.
- Stock is not included, so the kit covers the buffer system but not the complete rear-end setup.
- For 40S&W, 10mm, or 45ACP builds, a heavier buffer spring is recommended, so the included spring may not be the right fit for every caliber configuration.
- Can be purchased as an assembly or as the buffer alone, which gives flexibility but also means buyers need to confirm exactly which components are included before ordering.
Suggested Comparisons
- AR-15 buffer kits
- 9mm Luger carbine buffer systems
- Pistol-caliber carbine lower parts
- AR-15 receiver extension components
Suggested Accessories
- Stock
- Heavier buffer spring
- Receiver end plate
- Castle nut
Frequently Asked Questions
What is included in the Aero Precision EPC Buffer Kit?
The kit includes the EPC buffer, 308 carbine buffer spring, enhanced carbine buffer tube, mil-spec receiver end plate, and mil-spec castle nut. A stock is not included.
Is this buffer kit intended for a standard AR-15 build?
No. The source states the 8.1 oz EPC buffer is not intended for use in AR-15 or M5 platforms because its additional length and weight will not allow proper cycling of standard platforms.
Can this be purchased as a complete assembly or as individual parts?
Yes. The product description says it can be purchased as an assembly or as the buffer alone.
What platform is this buffer kit optimized for?
It is specifically optimized for use in the Aero Precision EPC.
Is there any guidance for 40 S&W, 10mm, or 45 ACP builds?
Yes. The description notes that for use in a 40 S&W, 10mm, or 45 ACP build, a heavier buffer spring is recommended.