P80 G150 AR-15 80% Receiver Kit – OD Green - polymer 80
About this product
What is the P80 G150 AR-15 80% Receiver Kit? It is a polymer-based incomplete lower receiver requiring machining to legal completion, supplied with the Phoenix2 jig system for precise fixture alignment during the milling process. This OD Green kit weighs 283 grams and measures 7.5 inches in length, designed for builders seeking a lightweight alternative to aluminum receivers. The Phoenix2 jig system reduces setup time by approximately 15 minutes compared to previous generation fixtures.
What is the P80 G150 AR-15 80% Receiver Kit used for?
This kit serves as the foundation for building a compliant AR-15 pattern rifle from an unfinished state. The 80% lower requires final machining of the fire control group pocket and trigger pin holes to become a functional receiver. It ships with the necessary jig components to guide drilling and milling operations using standard workshop tools.
How does the P80 G150 AR-15 80% Receiver Kit compare to the .308 80% Lower – Billet?
The G150 polymer receiver weighs 283 grams compared to 510 grams for the billet aluminum .308 80% Lower – Billet. The aluminum version provides superior heat resistance and rigidity for larger caliber applications, while the polymer G150 offers weight reduction and corrosion resistance for standard 5.56mm builds.
What does it weigh and what are the dimensions?
The unfinished lower receiver weighs 283 grams (10 ounces) with overall dimensions of 7.5 inches long, 2.1 inches wide, and 1.6 inches thick. The complete Phoenix2 jig system adds 680 grams (24 ounces) to the total package weight. These measurements ensure compatibility with standard AR-15 upper receivers and buffer tubes.
Who is this NOT for?
This kit is unsuitable for builders lacking access to a drill press or milling machine, as completion requires precise machining operations. It also should be avoided by those building for calibers exceeding .223/5.56 pressure specifications, as polymer may not withstand higher stress loads. For heavy-use applications, consider the aluminum 80% Lower Fire/Safe Marked - Anodized Black instead.
What's in the box?
The kit contains one 80% polymer lower receiver in OD Green, the Phoenix2 jig system with alignment pins, drill guide templates, and all necessary hardware for fixture assembly. The package includes three specialized drill bushings for trigger pin, selector, and safety hole drilling operations. No tools or finishing supplies are included beyond the jig components.
Is the P80 G150 AR-15 80% Receiver Kit worth it at $85?
At $85, this kit provides competitive value for builders prioritizing weight reduction over material strength. The included Phoenix2 jig represents approximately $40 of the total cost when purchased separately. For technical guidance on completion techniques, reference the Best Drill Bits for Polymer Frame Modifications.
Specs at a glance
Video review
Pros & cons
What works
- Weighs 283 grams — 227 grams lighter than aluminum billet receivers
- Phoenix2 jig reduces setup time by approximately 15 minutes
- Corrosion-resistant polymer requires no finishing or coating
- Maintains Mil-Spec dimensions within 0.5mm tolerance
Trade-offs
- Polymer construction limits heat dissipation during sustained fire
- No threaded holes for grip screw — requires self-tapping installation
- Jig system requires 12mm drill press chuck minimum
- Not compatible with .308 or other high-pressure calibers
Expert review
Key attributes
| Caliber | .223/5.56 NATO |
| Material | Polymer composite |
| Weight | 283 g |
| Length | 7.5 in |
| Width | 2.1 in |
| Height | 1.6 in |
| Color | OD Green |
| Completion | 80% Lower |
Specifications
| Compatibility | AR-15 |
| Completion Status | 80% Lower |
| System | Phoenix2 Jig System |
| Color | OD Green |
Best for
- receiver completion
- custom firearm assembly
Materials
- polymer
- steel
- aluminum
What's in the box
- 80% lower receiver
- jig system
- drill bits
- milling bits
Frequently asked questions
- Is it compatible with Mil-Spec AR-15 parts?
- Yes, the G150 maintains full Mil-Spec dimensions for trigger groups, pistol grips, and buffer tubes. All pin locations align with standard AR-15 patterns within 0.5mm tolerance. Use standard fire control components from reputable manufacturers like CMC or Geissele.
- Does it fit standard AR-15 jigs?
- No, this receiver requires the proprietary Phoenix2 jig system included in the kit. The polymer construction uses different clamping points than aluminum receivers. Attempting to use standard 80% jigs may result in misalignment and machining errors.
- How long does shipping take?
- Standard shipping processing takes 3-5 business days before carrier pickup. Transit time varies by location but typically adds 2-7 additional business days. Expedited options are available through UPS for an additional $18-35 depending on destination.
- Can I return it if it doesn't fit?
- No, due to the nature of 80% receivers, all sales are final once the package is opened. ModFuze recommends verifying compatibility through technical specifications before purchase. Damaged or defective items may be exchanged within 30 days with original packaging.
- Does this work with aftermarket triggers?
- Yes, it accepts standard AR-15 trigger groups including drop-in units from Timney and Rise Armament. The polymer fire control pocket requires clean machining to within 0.010" tolerance for optimal function. Refer to manufacturer specifications for specific trigger compatibility.