Receiver PartsAero PrecisionSold by Brownells

Aero Precision

Ar .308 Lower Receiver Complete W/ Magpul Moe Grip - M5 Comp Lower Rcvr Magpul Moe Grip No Stock For Ar .308 Blk

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

Aero Precision

M5 .308 complete lower receiver

Does Not

Include a stock, letting you

Works Standard

Standard AR 308 components and

Rear Takedown

Pin detent hole is threaded

Bolt Catch

Uses a threaded screw pin,

$369.99
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SKU: 100054444

Overview

Built as a complete lower for a custom .308 AR setup, this Aero Precision M5 receiver gives hunters and shooters a solid starting point when assembling a big-bore rifle around standard AR .308 components and magazines. It ships without a stock, leaving that choice open for the final fit and intended use. The integrated trigger guard, threaded rear takedown pin detent hole, and screw-pin bolt catch are practical details that support a cleaner, more streamlined build. It also accommodates standard selectors, including 45-, 60-, and 90-degree options, and is designed to work with aftermarket pistol grips without a gap.

Why Hunters Choose the Aero Precision

Works Standard

Standard AR .308 components and

Complete Lower

Receiver provides a solid base

Does Not

Include a stock, letting you

Integrated Trigger

Guard adds a clean, built-in

Threaded Rear

Takedown pin detent hole and

Key Features

  • Aero Precision M5 .308 complete lower receiver for a custom big-bore AR rifle
  • Does not include a stock, letting you choose the setup that fits your needs
  • 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 need for a roll pin
  • Integrated trigger guard and selector markings for 45, 60, or 90 degree safety selectors

Best Used For

  • Hunters building a custom .308 AR lower with standard AR 308 components and magazines
  • Users who want a complete lower without a stock, so they can choose their own setup
  • Builders planning to use aftermarket pistol grips with a no-gap lower receiver fit
  • Shooters considering 45, 60, or 90 degree safety selectors on an M5 .308 lower
  • Those assembling a big-bore AR platform around Aero Precision M5 lower receiver components

Specifications

Bolt CatchThreaded for a screw pin (no roll pin needed)
Caliber.308
ColorBlack
CompatibilityWorks with standard AR 308 components and magazines
Grip IncludedMagpul Moe Grip
Magazine ManufacturerAero Precision
ModelM5 .308 Complete Lower Receiver
Pistol Grip FitNo gap with aftermarket pistol grips
Rear Takedown Pin Detent HoleThreaded for a 4-40 set screw
Safety Selector CompatibilityAccepts Battle Arms Development short throw safety selectors, but will work with any standard selector
Selector MarkingsWill work with 45, 60 or 90 degree safety selectors
Stock IncludedNo
Trigger GuardIntegrated

Pros

  • Works with standard AR .308 components and magazines for straightforward build compatibility.
  • Complete lower receiver provides a solid base for a custom big-bore AR rifle.
  • Does not include a stock, letting you choose the setup that fits your needs.
  • Integrated trigger guard adds a clean, built-in lower receiver design.
  • Threaded rear takedown pin detent hole and bolt catch simplify assembly details.
  • Compatible with standard selectors and Battle Arms Development short throw safety selectors.

Considerations & Trade-offs

  • Does not include a stock, so the final setup depends on the stock you choose separately.
  • Designed for standard AR .308 components and magazines, so compatibility should be checked against any non-standard parts.
  • Selector markings are set up for 45, 60, or 90 degree safety selectors, but the actual selector choice remains up to the builder.
  • Built around the M5 .308 lower receiver format, so it is intended for a custom build rather than a ready-to-go complete rifle.

Suggested Comparisons

  • AR-10 / .308 lower receiver assemblies
  • Complete lower receivers without stock
  • Big-bore AR build components
  • Aftermarket AR pistol grips and safety selectors

Suggested Accessories

  • AR-308 upper receiver
  • AR-308 magazines
  • AR-308 stock
  • AR-308 safety selector

Frequently Asked Questions

Does this complete lower include a stock?

No. The description states that this complete lower does not come with a stock, so you can choose one that fits your setup.

What components and magazines does it work with?

It works with standard AR .308 components and magazines, according to the product description.

What safety selectors are compatible with the selector markings?

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 any assembly features mentioned for the lower receiver?

Yes. The rear takedown pin detent hole is threaded for a 4-40 set screw, the bolt catch is threaded for a screw pin, and the trigger guard is integrated.

Will aftermarket pistol grips leave a gap?

The description says there is no gap with aftermarket pistol grips.