Build Smarter, Not Harder. This is the 80% Lower That Listens.

You’ve built lowers before. You know the drill: the bolt catch roll pin that fights you, the rear takedown detent that launches into orbit, the general hassle that turns a project into a chore. We heard you. This isn’t just another 80% lower; it’s a direct response to builder feedback. Our Premium Billet Lower is engineered from the ground up to eliminate the classic pain points, giving you more time for precision machining and less time wrestling with springs and pins.

This is a complete kit to finish your AR-15 build right. You get a top-tier billet 80% lower receiver, a full lower parts kit, a butt stock, and a buffer tube assembly. Everything you need except the tools and the final machining steps. It’s built for the builder who appreciates smart design and American manufacturing, without the paperwork.

Where Engineering Meets Common Sense

• Threaded Bolt Catch Release Hole: Forget hammering that stubborn roll pin. A simple screw and the included hex key secure your bolt catch smoothly, with zero risk of marring your receiver or bending the catch.
• Threaded Rear Takedown Detent Hole: No more cup-and-spring tricks or fearing the “ping” of a lost detent. Thread the detent and spring directly into the lower. It’s secure, permanent, and frustration-free.
• Billet 7075-T6 Aluminum: This isn’t forged. We start with a solid block of aerospace-grade 7075-T6 aluminum and CNC machine it to exacting tolerances. The result is a receiver that’s exceptionally strong, with clean, sharp lines and a unique aesthetic.
• Deep-Fire & Safe Engravings: Selector markings aren’t an afterthought. They are deeply laser-engaged and filled for maximum contrast and permanent legibility. It looks professional because it is.
• Broached Mil-Spec Magwell: Accepts all standard AR-15 magazines with a smooth, consistent feed path. The interior is finished to a level that shows we care about the details you’ll feel.

Straight Specs, No Surprises

• Material: 7075-T6 Aluminum Billet
• Finish: Type III Hardcoat Anodized, Mil-Spec Black
• Markings: Laser Engraved & Filled FIRE / SAFE
• Included Hardware: All necessary screws and hex key for threaded features
• Compatibility: Standard AR-15/Mil-Spec components
• Origin: 100% Machined and Finished in the United States
• Legal Status: This is a firearm component. It is NOT a firearm. NO FFL REQUIRED for purchase. Shipment is direct to your door (where permitted by state/local law).

You are responsible for knowing and complying with all federal, state, and local laws regarding the purchase, manufacture, and possession of firearm components.

What You Get in the Box

This is a complete assembly kit. When you order, you receive:

1. One (1) Premium Billet 80% Lower Receiver (Fire/Safe Marked, Anodized Black)
2. One (1) Complete Lower Parts Kit (LPK) with all pins, springs, trigger, hammer, disconnector, etc.
3. One (1) Butt Stock (Mil-Spec)
4. One (1) Buffer Tube Assembly (includes buffer tube, buffer spring, buffer weight, and castle nut)
5. Required screws and hex key for the threaded enhancements

Why This Lower Beats the Standard Forged Option

Forged lowers are great. They’re the standard for a reason. But if you’re building a rifle that reflects your own effort and taste, a billet lower is the way to go. The machining allows for sharper contours, unique flaring, and design features that forging can’t achieve. Combined with our threaded solutions for the two most annoying installation steps, this lower represents a tangible upgrade in both the building experience and the final product.

This is for the builder who doesn’t just want to assemble parts, but wants to create something distinct and reliable. It’s for the person who values their time and wants to spend it on precise milling, not chasing tiny parts across the garage floor. We built this because it’s the lower we wanted on our own benches.

Ready to build a better AR-15? Add the Premium Billet 80% Lower Assembly to your cart now. This is American ingenuity, shipped direct to your workshop.