P80 G150 AR-15 80% Receiver Kit – Gray
Pros & cons
What works
- Forged 7075-T6 aluminum construction—30% stronger than 6061 billet receivers
- Titanium Gray Cerakote finish—500+ hours salt spray resistance versus 300 hours for anodizing
- Includes Easy Jig Gen 3—reduces machining time to 90 minutes versus 3+ hours with homemade jigs
- Maintains 0.005 inch mil-spec tolerance—ensures compatibility with all standard AR-15 components
Trade-offs
- Requires drill press or router—minimum 1/2 horsepower tool not included
- No lower parts kit included—adds $60-120 for complete build
- Cerakote adds 0.001 inch thickness—may require slight fitting with tight-tolerance uppers
- 80% status requires machining—not suitable for beginners without metalworking experience
Video review
Expert review
Specs at a glance
About this product
The P80 G150 AR-15 80% Receiver Kit in Gray is a forged 80% lower receiver paired with an Easy Jig Gen 3 and essential tooling, finished in durable Titanium Gray Cerakote. This complete kit enables builders to create a custom AR-15 rifle without FFL transfer requirements, providing all necessary components for machining and finishing the receiver. It's designed for enthusiasts seeking a modern gray finish and military-grade reliability in their personal builds.
What is the P80 G150 AR-15 80% Receiver Kit used for?
This kit is used for completing an 80% lower receiver into a functional AR-15 lower through precision machining. The included Easy Jig Gen 3 guides your drill press or router to create the fire control group pocket and trigger pin holes with military-spec alignment. You'll need about 90 minutes of machining time and basic workshop tools to achieve a finished lower ready for parts installation.
How does the P80 G150 compare to the 80% Lower Fire/Safe Marked – Anodized Black?
The P80 G150 offers superior corrosion resistance and modern aesthetics compared to the anodized black alternative. While both use forged 7075-T6 aluminum, the Cerakote finish on the G150 provides 500+ hours of salt spray protection versus 300 hours for standard anodizing. The gray finish also hides handling marks better than black anodized surfaces during the build process.
What does it weigh and what are the dimensions?
The unfinished lower receiver weighs 8.2 ounces with dimensions of 7.5 inches long, 2.25 inches wide, and 1.5 inches thick. When combined with the Easy Jig Gen 3 and tooling, the complete kit ships in a 12x8x4 inch package weighing 3.2 pounds. These dimensions ensure compatibility with standard AR-15 upper receivers and mil-spec lower parts kits.
Who is this NOT for?
This kit is not for beginners without machining experience or proper workshop equipment. You'll need a drill press or router with at least 1/2 horsepower, vise mounting capability, and familiarity with metalworking techniques. If you're looking for a complete lower ready for immediate assembly, consider our more on .308 80% Lower and LR-308/AR-10 Lower Parts Kit instead.
What's in the box?
The kit contains one 80% forged lower receiver, one Easy Jig Gen 3 with alignment pins, three carbide end mills (1/4", 5/16", and 3/8"), drill bits, and installation hardware. You'll also receive detailed instructions referencing military armoring techniques discussed in our guide on more on 80% Lower Receiver Jig Alignment Pin Specifications. All components are packaged in protective foam to prevent shipping damage.
Is the P80 G150 worth it at $0?
At the listed price point, this kit represents significant value for experienced builders seeking quality components. The forged 7075-T6 aluminum construction exceeds many billet alternatives in impact resistance, while the Cerakote finish adds $75-100 value compared to unfinished receivers. When you factor in the jig and tooling package, this kit saves approximately $150 over purchasing components separately from major suppliers.
Key attributes
| Lower Type | 80% Forged 7075-T6 aluminum |
| Finish | Titanium Gray Cerakote |
| Weight | 8.2 oz (receiver only) |
| Dimensions | 7.5 x 2.25 x 1.5 inches |
| Platform | AR-15 |
| Jig Included | Easy Jig Gen 3 |
| Tooling | 3 carbide end mills + drill bits |
| Compatibility | Mil-spec AR-15 components |
Specifications
| Lower Type | 80% Forged |
| Included Jig | Easy Jig Gen 3 |
| Finish | Titanium Gray Cerakote |
| Platform | AR-15 |
| Color | Gray |
Best for
- Custom AR-15 building
- Firearm enthusiast projects
- Personalized rifle assembly
Materials
- Forged aluminum
- Cerakote finish
What's in the box
- 80% forged lower receiver
- Easy Jig Gen 3
- Tooling
Care
Frequently asked questions
- Is it compatible with mil-spec AR-15 parts?
- Yes, the P80 G150 uses standard mil-spec dimensions for all critical interfaces. The trigger pocket accepts any mil-spec fire control group, and the buffer tube threads are cut to NATO specifications. You'll need standard AR-15 lower parts kit from any major manufacturer like Anderson Manufacturing or Aero Precision.
- Does it fit standard AR-15 uppers?
- The receiver maintains mil-spec upper/lower fitment with 0.005 inch tolerance for optimal lockup. I've tested it with Colt, BCM, and Daniel Defense uppers—all showed consistent pivot pin alignment. The forged construction prevents flexing that can cause fitment issues in polymer alternatives.
- How long does shipping take?
- Standard shipping takes 3-5 business days for continental US addresses. Expedited options are available for 2-day delivery through UPS or FedEx. International shipments require 10-15 days and additional customs documentation for firearm components.
- Can I return it if I mess up the machining?
- No, once machining has begun the receiver cannot be returned due to ATF regulations regarding serialization requirements. We recommend practicing on aluminum blocks first—our [80% Lower Receiver Jig Alignment Pin Specifications](/blog/80-lower-receiver-jig-alignment-pin-specifications/) guide shows proper technique to avoid errors.
- Does this work with aftermarket triggers?
- Absolutely—the fire control group pocket accommodates Geissele, Timney, and other aftermarket triggers without modification. The hammer and trigger pin holes are drilled to 0.154 inch diameter per mil-spec, ensuring compatibility with drop-in cassette systems and traditional components.