Stop Fighting Your Build. Start Finishing It.

You know the drill. You get an 80% lower, the parts kit, and then you spend more time cussing at the roll pins and detents than you do actually machining. That ends here. This isn’t just another chunk of aluminum; this is a billet lower engineered from the ground up to eliminate the headaches. We listened to builders in the shop and on the forums, and we fixed the problems. This premium assembly gives you a rock-solid foundation and the critical parts to finish the job, all in one box.

What Makes This Lower Different:

• Threaded Bolt Catch & Rear Takedown Holes: This is the main event. The bolt catch pin hole and the rear takedown detent hole are now threaded. You install the included set screws with the provided hex key. No more hammering, no more flying detent springs, no more marred finishes. It’s a five-minute job instead of a fifty-minute fight.
• True 7075-T6 Aluminum Billet: Not forged. We start with a solid block of aerospace-grade 7075-T6 aluminum and CNC machine it to precise specs. The result is a receiver with sharper lines, a more rigid structure, and a distinct look that stands out from the crowd.
• Clean, Deep Fire/Safe Engravings: The selector markings are laser-engraved deep into the metal, not just surface etched. They’re crisp, permanent, and ready to hold whatever color fill you want to add.
• Complete Build-Ready Kit: You get the 80% lower, a full lower parts kit (LPK), a butt stock, and a buffer tube assembly. We include the screws and hex key for the threaded features. You source the fire control group, upper, and tools. This kit covers the rest.
• Broached Mil-Spec Magwell: The magazine well is professionally broached for a consistent, smooth feed path and a perfect fit with all standard AR-15 magazines.

Specifications & What You Get:

Material: 7075-T6 Aluminum Billet
Finish: Type III Hardcoat Anodized, Mil-Spec Black
Engravings: FIRE & SAFE Selector Markings
Compatibility: Standard AR-15 / Multi-Caliber
Origin: 100% Made in the USA

Package Contents:

1. One (1) Billet 80% Lower Receiver (Fire/Safe Marked)
2. One (1) Complete Lower Parts Kit (Less Fire Control Group)
3. One (1) Butt Stock (6-Position Adjustable)
4. One (1) Buffer Tube Assembly (Buffer, Spring, Tube, Castle Nut, End Plate)
5. Set Screws & Hex Key for Threaded Holes

Building Your AR-15 with an 80% Lower

For the hands-on shooter, building from an 80% lower is the ultimate way to understand your rifle. It’s a project that grants you full control over the final product. Since this is a receiver blank, it is not classified as a firearm by the ATF. That means it ships right to your door with no FFL paperwork or background check. The final machining steps (completing the fire control group pocket and drilling the trigger pin holes) are your responsibility. You’ll need a jig and a drill press or router. It’s a straightforward process for anyone with basic mechanical skill, and the reward is a rifle you built yourself.

This particular billet lower is favored by builders who want a premium look and easier assembly. The threaded holes are a genuine innovation that advanced builders appreciate and new builders desperately need. Starting with a billet block also allows for unique aesthetic touches and enhanced strength in key areas over some forged receivers.

Note on Legal Compliance: You must be legally eligible to possess a firearm to purchase this item. It is your responsibility to manufacture your firearm in accordance with all federal, state, and local laws. This receiver must be for personal use only and cannot be manufactured for sale or distribution. Serialization requirements vary by state; know your laws.

Ready to Build It Better?

This Premium Billet Lower Assembly is for the builder who values their time and wants a superior finished product. You’re not just buying parts; you’re buying a smoother, smarter build experience. The price gets you the enhanced lower and the essential components to complete it—no hidden costs.

Click add to cart to get your build started. Have questions about compatibility or the machining process? Our team are builders themselves. Reach out. We’re here to help you get it done.

Add to Cart – $148.49

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