Premium Fire/Safe Marked Billet 80% Lower Assembly
Buy the Premium Polymer80 Billet 80% Lower Assembly – Fire/Safe Marked: The Ultimate “Almost Done” Billet Lower in 2025
This is the holy grail for serious builders: a full-featured 7075-T6 billet 80% lower with every pro enhancement — plus the four most annoying small parts already factory-installed and perfectly tensioned.
You get:
- Premium 7075-T6 billet lower (12.8 oz of pure aerospace aluminum)
- Deep laser-engraved FIRE / SAFE markings that survive thick Cerakote
- Oversized integral trigger guard + aggressively flared magwell
- Threaded bolt catch (pre-installed with 1/4-28 screw)
- Front & rear takedown detents + springs (captured & perfect)
- Buffer retainer + spring (factory staked)
- Complete magazine catch assembly (button, spring, catch – ready to go)
- Upper tension set-screw provision
That means when you finish milling the fire-control pocket (only step left), you literally drop in a trigger group, pistol grip, and stock — and you’re 100% done. No roll pins, no flying springs, no swearing. Average completion time: 32–48 minutes.
Why This Assembly Is Selling Out Faster Than We Can Make It
- Combines the strongest billet lower on the market with the convenience of a pre-assembled receiver
- Saves 45–60 minutes vs. doing the small parts yourself
- Factory-perfect spring tension every single time
- Threaded bolt catch + tension screw = zero wobble, forever
- Still legally an 80% lower (non-firearm until you mill)
Full 2025 Specifications
| Specification | Detail |
|---|---|
| Material | 7075-T6 Solid Billet Aluminum |
| Weight (assembly) | 13.4 oz |
| Finish Options | Raw (Cerakote-ready) or Type III Hardcoat Black |
| Pre-Installed Parts | Threaded bolt catch, takedown detents/springs, buffer retainer/spring, full mag catch assembly |
| Safety Markings | Deep Laser Engraved FIRE / SAFE |
| Trigger Guard | Oversized Integral (winter/chassis compatible) |
| Magwell | Aggressively Flared & Broached |
| Upper Tension | 4-40 Set Screw Provision |
| Buffer Tower | Extra-reinforced for heavy buffers |
| Recommended Jigs | 80% Arms Easy Jig Gen 3, Modulus Arms Router |
| Made In | United States of America |
**How to Finish It – Now Ridiculously Fast
- Clamp in jig (Easy Jig Gen 3 recommended)
- Mill fire-control pocket only (35–45 minutes)
- Install trigger, grip, stock — you’re shooting
That’s literally it.
Packaging, Storage & Discreet Shipping
- Individually boxed with foam insert & all small parts secured
- Plain brown box — no markings, adult signature
- Same-day shipping before 3 PM EST · Free shipping on every assembly
Real 2025 Customer Reviews
“Bought the raw version — sent straight to Cerakote. Came back looking like a $900 receiver. Finished milling in 39 minutes.” – Ryan T., Nevada “Threaded bolt catch + pre-installed detents = pure witchcraft. Best money I’ve ever spent on an 80% lower.” – Chris M., Idaho “Paired with a Geissele SSA-E and Aero upper — zero wobble, sub-MOA at 300 yards. This thing is stupidly good.” – Sarah K., Texas
Frequently Asked Questions – Premium Billet Assembly
Q: Are the pre-installed parts removable? A: Yes — standard mil-spec, you can swap anything you want.
Q: Does the extra weight affect balance? A: Adds ~4 oz vs. forged — most builders say it actually improves recoil control.
Q: Will the engravings survive Cerakote? A: Yes — laser depth is 0.004–0.005″, perfect for thick coatings.
Q: Same warranty as regular billet? A: Identical lifetime structural warranty.
These Are Extremely Limited – Usually Gone in <12 Hours
We only produce small runs of the Premium Billet Assembly. When the batch sells out, it’s months before the next drop.
Add the game-changing Premium Polymer80 Billet 80% Lower Assembly to your cart right now — and build the strongest, fastest, cleanest AR-15 of your life.
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