Receiver PartsAero PrecisionSold by Brownells

Aero Precision

M5 Carbine Complete Lower Receiver W/A2 Grip No Stock - M5 Carbine Complete Lower W/A2 Grip No Stock For Ar .308 Blk

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

Complete M5

.308 lower receiver for a

Works Standard

Standard AR .308 components and

Rear Takedown

Pin detent hole is threaded

Bolt Catch

Uses a threaded screw pin,

Integrated Trigger

Guard is built into the

$305.99
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: 100034904

Overview

Built as a complete lower receiver for a custom .308 AR setup, this Aero Precision component provides a practical starting point for hunters and shooters assembling a big-bore rifle around standard AR 308 parts and magazines. It includes an A2 grip and is offered without a stock, making it suited to builds where the lower will be finished to the user’s preferred configuration. The integrated trigger guard and threaded details for the rear takedown pin detent and bolt catch are useful touches for a cleaner assembly process. Selector markings are compatible with 45, 60, or 90 degree safety selectors, and the lower also accepts Battle Arms Development short throw selectors as well as standard selectors.

Why Hunters Choose the Aero Precision

Works Standard

Standard AR .308 components and

Integrated Trigger

Guard adds a clean, unified

Threaded Rear

Takedown pin detent hole supports

Bolt Catch

Uses a threaded screw pin,

Selector Markings

Support 45, 60, or 90

Key Features

  • Complete M5 .308 lower receiver for a custom big-bore AR rifle build.
  • Works with standard AR .308 components and magazines.
  • Rear takedown pin detent hole is threaded for a 4-40 set screw.
  • Bolt catch uses a threaded screw pin, eliminating the roll pin.
  • Integrated trigger guard is built into the lower receiver.
  • Selector markings support 45, 60, or 90 degree safety selectors.
  • Accepts Battle Arms Development short throw safety selectors and standard selectors.

Best Used For

  • Custom .308 AR builders wanting a complete lower receiver base for a big-bore rifle project
  • Users planning standard AR 308 components and magazines in a compatible lower receiver setup
  • Builders who prefer threaded pin features and an integrated trigger guard for assembly convenience
  • Shooters using 45, 60, or 90 degree safety selectors, including short-throw options
  • Hunters assembling a personalized AR .308 platform without a stock included

Specifications

Accepts Battle Arms Development Short Throw Safety SelectorsYes
Bolt Catch Threaded For A Screw Pin No Roll Pin NeededYes
Integrated Trigger GuardYes
No Gap With Aftermarket PisYes
Rear Takedown Pin Detent Hole Threaded For A 4 40 Set ScrewYes
Selector Markings Compatible With 45 60 Or 90 Degree Safety SelectorsYes
Works With Any Standard SelectorYes
Works With Standard Ar 308 Components And MagazinesYes

Pros

  • Works with standard AR .308 components and magazines for broad parts compatibility.
  • Integrated trigger guard adds a clean, unified lower receiver design.
  • Threaded rear takedown pin detent hole supports a 4-40 set screw.
  • Bolt catch uses a threaded screw pin, eliminating a roll pin.
  • Selector markings support 45, 60, or 90 degree safety selectors.
  • Accepts Battle Arms Development short throw selectors and standard selectors.

Considerations & Trade-offs

  • Designed as a complete lower receiver, so it is a more finished starting point than a stripped lower, but it also means less flexibility if you want to source every component separately.
  • It is set up around standard AR .308 components and magazines, so compatibility is centered on that pattern rather than broader cross-platform use.
  • The selector markings are intended to work with 45, 60, or 90 degree safety selectors, but the lower is still described as working with any standard selector, so final setup depends on the parts chosen.
  • The product is listed with no stock and an A2 grip, so stock selection remains a separate decision for the build.

Suggested Comparisons

  • AR-10 / .308 lower receiver assemblies
  • Stripped lower receivers for .308 builds
  • Complete lower receiver kits
  • AR .308 magazines

Suggested Accessories

  • Lower parts kit
  • AR .308 magazines
  • Safety selector
  • Buffer tube assembly

Frequently Asked Questions

What caliber or platform is this lower receiver intended for?

It is an M5 .308 complete lower receiver, described as a base for a custom big-bore AR rifle.

Does this complete lower work with standard AR .308 parts and magazines?

Yes. The product description states that it works with standard AR 308 components and magazines.

What safety selector options does it support?

The selector markings will work with 45, 60, or 90 degree safety selectors. It also accepts Battle Arms Development short throw safety selectors and will work with any standard selector.

Are there any special installation or assembly features mentioned?

Yes. The rear takedown pin detent hole is threaded for a 4-40 set screw, and the bolt catch is threaded for a screw pin, so no roll pin is needed.

Does it include a stock?

No stock is included in the title or description. It is listed as a complete lower receiver with an A2 grip and no stock.