M5 Complete Lower Receiver with MOE and STR Black

Product Description

The Aero Precision M5 complete lower receiver with MOE and STR in black is a serialized .308-platform lower assembly built for large-frame AR-style rifles. This complete lower arrives assembled with furniture installed, so you can mate it with a compatible upper receiver and move directly to function-checking and zeroing.

The M5 platform is Aero Precision’s large-frame series, designed around the .308 Winchester and 6.5 Creedmoor cartridge families. A complete lower like this one eliminates the need to source and install individual fire-control parts, buffer assemblies, and furniture separately.

Because this is a serialized lower receiver, it ships to our FFL after your order and requires a background check and 4473 completion at our Roanoke location before transfer.

Key Facts

• Brand: Aero Precision
• Model: M5 Complete Lower Receiver with MOE and STR
• SKU: APAR308017
• Finish: Black
• Category: Serialized complete lower receiver

What the M5 Lower Receiver Fits

The M5 lower receiver is built to the DPMS-pattern .308 specification, which is the most common large-frame AR standard. It accepts DPMS-compatible upper receivers, meaning you can pair it with a wide range of .308 and 6.5 Creedmoor uppers from Aero Precision and other manufacturers that follow the same dimensional standard.

The M5 will not accept AR-15 (small-frame) upper receivers. The magazine well, pivot and takedown pin spacing, and buffer tube threads are all sized for the larger .308 cartridge family. If you’re building a 5.56 or .223 rifle, you need an AR-15 lower instead; browse our complete lowers to compare options.

Complete vs. Stripped M5 Receivers

A complete lower arrives with the fire-control group, buffer system, and furniture already installed. A stripped lower is the serialized forging or billet only; you source and install every internal component yourself.

Complete lowers save time and eliminate the need for specialized punches, vise blocks, and staking tools. Stripped lowers offer full control over trigger choice, buffer weight, and stock style, but require more tools and experience. For builders who want to start shooting sooner or who prefer known-good fire-control components, a complete lower removes variables.

You can find both configurations in our lower receivers category.

FFL Transfer Process in Texas

Lower receivers are serialized firearms under federal law. When you order this M5 lower, it ships to Western Sport, and we contact you when it arrives. You’ll complete ATF Form 4473 and pass a NICS background check in our Roanoke shop before taking possession. Bring a current Texas driver’s license or LTC if you’re a Texas resident, or your state-issued ID and proof of residency if you’ve recently moved.

The transfer process typically takes fifteen to twenty minutes once paperwork begins. If you have questions about eligibility or documentation, call us at 817-393-4000 before placing your order.

Buying from Western Sport in Roanoke, TX

Western Sport is a licensed FFL/SOT dealer and gunsmith shop serving the North Texas and DFW area since 2007. Owner and gunsmith Lance Rankin and his team handle transfers, custom builds, and repairs on site. Call 817-393-4000 to confirm details, ask about compatibility, or place an order.

Frequently Asked Questions

Q: Will the M5 lower receiver work with AR-15 uppers?

A: No, the M5 lower receiver is dimensioned for DPMS-pattern .308 uppers and will not mate with AR-15 (small-frame) uppers. The pivot and takedown pin holes, magazine well, and buffer tube threads are all sized for the larger .308 cartridge family, making the two platforms incompatible.

Q: Is the M5 receiver the same as the M5E1?

A: The M5 and M5E1 are distinct product lines within Aero Precision’s large-frame family. The M5E1 features a threaded bolt catch pin and an integrated trigger guard, while the standard M5 uses a roll pin and a removable trigger guard. Both follow DPMS .308 dimensions for upper receiver compatibility.

Q: What does “complete lower” mean for the M5?

A: A complete lower arrives fully assembled with the fire-control group, safety selector, magazine release, bolt catch, buffer tube, buffer, action spring, and furniture installed. You do not need to source or install internal parts. To complete the rifle, you add a compatible M5 or DPMS-pattern upper receiver and verify function.

Q: Can I pick up this lower receiver in person at Western Sport?

A: Yes, you complete your transfer at our Roanoke, Texas location after the lower arrives. You will fill out ATF Form 4473 and pass a NICS background check before taking possession. Bring a valid government-issued photo ID and proof of residency if required. Call 817-393-4000 to confirm hours and documentation requirements.

Q: Does Aero Precision offer a warranty on the M5 lower?

A: Call 817-393-4000 to confirm current warranty terms for this lower receiver. Warranty policies vary by manufacturer and can change, so we recommend verifying coverage details before your purchase if warranty length is a deciding factor.

Q: What is the black finish on this M5 lower receiver?

A: The product name specifies a black finish, but the specific coating or anodizing type is not listed. For exact finish details—whether Type III hard-coat anodizing, Cerakote, or another process—call Western Sport at 817-393-4000 and reference SKU APAR308017.

Additional information