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Aero Precision

Ar .308 M5 Bar Barrel Nut Kits - M5e1 Handguard Bar Barrel Nut Kit Dpms Thread For Ar-308 Blk

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

Connects Aero

Precision M5 Enhanced handguards to

Includes M5e1

Handguard barrel nut and a

Shims Are

The upper receiver

Machined From

A QPQ/Melonite coating

Torques 65

Ft-lbs using a standard AR15

$53.99
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SKU: 100035811

Overview

This barrel nut kit is intended for mounting Aero Precision M5 Enhanced handguards to DPMS pattern threaded upper receivers. It includes a shim pack with five shims to help time the gas tube correctly during installation. The kit is machined from 1144 Stressproof steel and finished with a QPQ/Melonite coating, and it is specified to torque to 65 ft-lbs with a standard AR15 armorer’s wrench. For builders working on an AR-308/M5E1 setup, it provides the interface hardware needed when matching an Aero Precision handguard to the proper threaded upper receiver.

Why Hunters Choose the Aero Precision

Connects Aero

Precision M5 Enhanced handguards to

Includes Five-shim

Pack for proper gas tube

Machined From

1144 Stressproof steel for the

Qpq/melonite Coating

Is listed in the product

Torque Specification

A standard AR15 armorer's wrench

Key Features

  • Connects Aero Precision M5 Enhanced handguards to DPMS pattern threaded upper receivers.
  • Includes a M5E1 handguard barrel nut and a shim pack with five shims.
  • Shims are provided to help time the gas tube with the upper receiver.
  • Machined from 1144 Stressproof steel with a QPQ/Melonite coating.
  • Torques to 65 ft-lbs using a standard AR15 armorer's wrench.
  • Listed weight is 5.4 oz.

Best Used For

  • Builders installing Aero Precision M5 Enhanced handguards on DPMS pattern threaded upper receivers.
  • Users needing the included shim pack to time the gas tube during handguard installation.
  • AR-308 owners matching an Aero/DPMS threaded barrel setup with the correct barrel nut.
  • Armorer-level installations using a standard AR15 armorer's wrench and specified torque.
  • Shooters replacing a standard threaded upper receiver connection with an M5E1-compatible setup.

Specifications

CoatingQPQ/Melonite
CompatibilityAero Precision M5 Enhanced Handguards to DPMS pattern threaded upper receivers
Included ItemsM5E1 Handguard Barrel Nut; Shim Pack (5 shims)
Material1144 Stressproof Steel
Shim Count5
Tool RequirementStandard AR15 armorer's wrench
Torque Specification65 ft lbs
Weight5.4 oz

Pros

  • Connects Aero Precision M5 Enhanced handguards to DPMS pattern threaded upper receivers.
  • Includes a five-shim pack for proper gas tube timing.
  • Machined from 1144 Stressproof steel for the barrel nut.
  • QPQ/Melonite coating is listed in the product features.
  • Torque specification is provided: 65 ft lbs with a standard AR15 armorer's wrench.
  • Compatible with Aero/DPMS threaded barrel selection noted by the manufacturer.

Considerations & Trade-offs

  • Designed specifically for Aero Precision M5 Enhanced handguards on DPMS-pattern threaded upper receivers, so it is not a universal barrel nut solution.
  • Installation calls for proper timing with the included shim pack, which adds an extra setup step.
  • Torque is specified at 65 ft-lbs with a standard AR15 armorer's wrench, so correct tools and installation discipline matter.
  • If you are working with a standard threaded upper receiver, you need to confirm the Aero/DPMS threaded barrel configuration before ordering.

Suggested Comparisons

  • AR-308 handguard mounting hardware
  • DPMS-pattern upper receiver accessories
  • AR-10/M5 enhanced handguard installation kits

Suggested Accessories

  • AR-15 armorer's wrench
  • Shim kit
  • Handguard
  • Upper receiver

Frequently Asked Questions

What is this barrel nut kit used for?

It is used to connect Aero Precision M5 Enhanced Handguards to DPMS pattern threaded upper receivers.

What is included in the kit?

The kit includes one M5E1 Handguard Barrel Nut and a shim pack with 5 shims.

Does this kit work with a standard threaded upper receiver?

The product note says that if you intend to connect an Aero Precision handguard to a standard threaded upper receiver, you will need an M5E1 Handguard Barrel Nut. The listing also says you need to select between an Aero/DPMS threaded barrel.

What are the listed material and coating?

The barrel nut is machined from 1144 Stressproof steel and has a QPQ/Melonite coating.

What torque specification is listed for installation?

The listing states torque to 65 ft-lbs with a standard AR15 armorer's wrench.