Blemished – 80% Lower Fire/Safe Marked – Anodized Black

About this product

The Blemished – 80% Lower Fire/Safe Marked – Anodized Black is a functional 80% lower receiver for the AR-15 platform made from forged 7075-T6 aluminum with minor cosmetic imperfections. This product allows for the legal completion of a personalized firearm by the end user, bypassing the need for an FFL transfer. It retains full mechanical function and features deep, precise engravings despite its blemished status and discounted price.

What is the Blemished – 80% Lower Fire/Safe Marked – Anodized Black used for?

This receiver is used as the starting foundation for building a custom AR-15 rifle or pistol that you complete yourself using appropriate jigs, tools, and parts kits. The primary function is to serve as the legal serialized component of a firearm, which you machine to final specification in your own workshop. This requires milling the fire control cavity to a depth of 1.250 inches, drilling the trigger, hammer, and selector holes, and installing a complementary parts kit and upper receiver. The process typically takes 2-3 hours for a builder with basic machining skills.

How does the Blemished Fire/Safe Lower compare to the standard 80% Lower Fire/Safe Marked?

The blemished version is functionally identical to the standard version but is sold at a significant discount due to minor, non-structural cosmetic flaws in the anodizing. Compared to the standard model (slug: 80-lower-fire-safe-marked-anodized-black), the blemished unit offers no difference in material (7075-T6), dimensions, or engraving depth; the only difference is visual finish quality. This makes the blemished receiver better for cost-driven builds where appearance is secondary, while the standard version is better for showpiece firearms where perfect finish is required.

What does it weigh and what are the dimensions?

The lower has a finished weight of 9.8 ounces (278 grams) in its 80% state. Its critical dimensions are a length of 7.625 inches from the rear of the buffer tube threads to the front takedown pin lug, a width of 1.375 inches across the magazine well, and a height of 5.250 inches from the top of the buffer tube shelf to the bottom of the grip mount. The fire control pocket blank measures 1.000 inch wide, requiring precise milling to the final 1.250-inch depth. For guidance on compatible jigs, refer to our AR-15 80% Lower Receiver Jig & Tool Compatibility Guide.

Who is this NOT for?

This product is not for first-time builders without access to a proper milling setup or those who demand a flawless cosmetic finish. The blemishes, while minor, are visible under direct light and include small specks or uneven color in the anodized black coating. It is also not compatible with builds requiring an integrated trigger guard or oversized takedown pin holes without modification. If your project requires a larger .308 platform, consider the 308 80% Lower – Billet.

What's in the box?

The box contains exactly one (1) 80% lower receiver, which is the raw, unmachined forging. You receive no tools, jigs, pins, or instructions. The receiver is packaged in a single-layer poly bag with desiccant to prevent corrosion, secured within a standard cardboard shipping box with protective foam inserts. You must source all machining equipment, such as the 5/16\ High Speed End Mill for Easy Jig® Gen 2, separately to complete the build.

Is the Blemished – 80% Lower Fire/Safe Marked – Anodized Black worth it at $49.99?

Yes, at $49.99, it represents a 35-40% cost saving versus a non-blemished equivalent, providing the same structural integrity and function for a practical build. The investment is justified if your priority is a reliable, functional lower receiver for a duty, training, or budget rifle where cosmetic perfection is irrelevant. The savings can be redirected toward higher-quality components like a barrel or trigger. For builders focused solely on aesthetics or who lack machining tolerance for any visual defect, the standard-priced model is the better choice.