Receiver PartsAero PrecisionSold by Brownells

Aero Precision

308 Ar M5 Lower Receiver - M5 Stripped Lower Receiver For Ar .308 Od Green

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

Stripped M5

.308 lower receiver for building

Mil-spec Dimensions

Support correct component interface

Fits Gen

1 DPMS .308 components, including

Machined From

7075-T6 aluminum

Matte Black

Hard-coat anodized Mil 8625 Type

$144.50
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SKU: 430103903

Overview

Built for assembling a custom .308 AR platform, this stripped lower receiver provides the foundation for a big-bore build using compatible DPMS pattern components, including magazines and upper receivers. Its mil-spec dimensions are intended to support proper component interface, while the integrated trigger guard and selector markings accommodate 45, 60, or 90 degree safety selectors. The rear takedown pin detent hole is threaded for a set screw, and the bolt catch is threaded for a screw pin, which simplifies parts retention during assembly. Finished in matte black hard-coat anodizing, it is aimed at builders who want a clean, purpose-driven lower for a ground-up rifle project.

Why Hunters Choose the Aero Precision

Custom Big-bore

AR builds from the ground

Mil-spec Dimensions

Support correct component interface

Fits Gen

1 DPMS .308 components, including

Machined From

7075-T6 aluminum for a robust

Integrated Trigger

Guard simplifies the lower receiver

Key Features

  • Stripped M5 .308 lower receiver for building a custom big-bore AR from the ground up.
  • Mil-spec dimensions support correct component interface.
  • Fits Gen 1 DPMS .308 components, including magazines and upper receivers.
  • Machined from 7075-T6 aluminum.
  • Matte black hard-coat anodized Mil 8625 Type 3 Class 2 finish.
  • Integrated trigger guard and selector markings work with 45, 60, or 90 degree safety selectors.

Best Used For

  • Custom .308 AR builders starting a rifle from a stripped lower receiver
  • Users matching Gen 1 DPMS-pattern magazines and upper receivers
  • Builders wanting mil-spec dimensions and integrated trigger guard details
  • Anyone planning a big-bore AR lower with threaded takedown pin and bolt catch features

Specifications

Blade Finishmatte black hard-coat anodized Mil 8625 Type 3 Class 2 finish
Bolt Catchthreaded for a screw pin
DimensionsMil-spec dimensions
FitsGen 1 DPMS 308 components, including magazine and upper receiver
Integrated Trigger GuardYes
Magazine CompatibilityDPMS pattern components, including magazines
Material7075-T6 aluminum
Rear Takedown Pin Detent Holethreaded 4-40
Selector Markingsfunction with 45, 60 or 90 degree safety selectors
Upper Receiver CompatibilityDPMS pattern components, including upper receivers

Pros

  • Designed for custom big-bore AR builds from the ground up.
  • Mil-spec dimensions support correct component interface.
  • Fits Gen 1 DPMS .308 components, including magazines and upper receivers.
  • Machined from 7075-T6 aluminum for a robust receiver foundation.
  • Integrated trigger guard simplifies the lower receiver design.
  • Selector markings work with 45, 60, or 90 degree safety selectors.

Considerations & Trade-offs

  • Stripped lower receiver only; it is the starting point for a build and does not include the upper receiver, magazines, or other components.
  • Compatibility is limited to Gen 1 DPMS .308 components, including magazines and upper receiver, so it is not a universal .308 AR lower.
  • Assembly is more involved than a complete lower, and the threaded takedown-pin and bolt-catch features are intended for builders who want a custom setup.
  • The matte black hard-coat anodized finish is specified, but the title also references OD green, so finish/color details should be verified against the exact item listing.

Suggested Comparisons

  • AR-10 / .308 lower receiver parts
  • Stripped lower receivers
  • DPMS pattern .308 components
  • AR .308 build components

Suggested Accessories

  • Lower receiver parts kit
  • DPMS-pattern upper receiver
  • .308 AR magazine
  • Safety selector

Frequently Asked Questions

What type of build is this lower receiver intended for?

It is a stripped M5 lower receiver for building a custom .308 AR from the ground up.

What upper and magazine pattern does it fit?

It fits Gen 1 DPMS .308 components, including DPMS pattern magazines and upper receivers.

What material and finish are listed for the receiver?

The receiver is machined from 7075-T6 aluminum and finished with a matte black hard-coat anodized Mil 8625 Type 3 Class 2 finish.

Does this lower include an integrated trigger guard?

Yes. The description lists an integrated trigger guard.

What safety selector options does it support?

The selector markings are stated to function with 45, 60, or 90 degree safety selectors.