Aero Precision M5 Apar308005C 308 Lower Strp Fde

The Aero Precision M5 lower receiver in FDE is a purpose-built foundation for .308 AR platform builds. Machined from 7075-T6 forged aluminum and made in America, this lower receiver is engineered to work seamlessly with standard AR 308 components and magazines, giving you the flexibility to source parts from the wide aftermarket ecosystem. Whether you're assembling a precision rifle, a versatile hunting build, or a dedicated range gun, this M5 platform lower provides the structural integrity and thoughtful engineering that separates quality builds from budget assemblies.

What sets this lower apart is the attention to detail in the design. The integrated trigger guard means fewer parts and less potential for rattle, while the upper tension screw lets you dial in a tighter or looser fit between upper and lower to match your preference. The threaded rear takedown pin detent hole and screw-pin bolt catch (no roll pin frustration) show that Aero Precision designed this for builders who value both function and ease of assembly. The selector markings are calibrated for 45, 60, or 90 degree safety selectors, and it's compatible with Battle Arms Development short throw units for those who want a faster manual of arms.

At 12 ounces, it's a substantial platform without unnecessary weight. The FDE finish offers a professional, modern aesthetic that works across hunting, tactical, and competition builds. Coming with the upper tension screw already included means you can get started right away—no hunting for compatibility issues or hunting separately for this critical component.

Key Features

• Machined from 7075-T6 forged aluminum for durability and precision
• Upper tension screw included for customizable receiver fit
• Integrated trigger guard reduces parts count and potential for shift
• Threaded rear takedown pin detent hole and screw-pin bolt catch for simplified assembly
• Compatible with 45, 60, and 90 degree safety selectors
• Works with Battle Arms Development short throw safety selectors and all standard AR 308 selectors
• Accommodates aftermarket pistol grips without gaps
• "Cal Multi" markings for platform versatility
• Made in the USA

Specifications

Frequently Asked Questions

What upper receiver and components will this .308 lower work with?

This Aero Precision M5 lower is designed to work with standard AR 308 components and magazines. It accepts any upper receiver built on the M5 platform and integrates with the broad aftermarket parts ecosystem built around AR .308 rifles.

Can I use this lower with aftermarket pistol grips?

Yes. The lower is designed to accommodate aftermarket pistol grips without gaps, giving you full flexibility to customize the ergonomics and feel of your build.

What safety selectors are compatible with this lower?

The receiver is marked for and works with 45, 60, and 90 degree safety selectors. It's also explicitly compatible with Battle Arms Development short throw safety selectors and will function with any standard AR selector.

What comes included with this lower?

The Aero Precision M5 lower includes the upper tension screw, which you use to fine-tune the fit between your upper and lower receiver. This is a critical tuning tool for getting your build just right.