P80 G150 AR-15 80% Receiver Kit – Zombie Green - polymer 80
Pros & cons
What works
- Weighs 4.6 oz unfinished—65% lighter than a raw aluminum lower.
- Phoenix2 jig includes 3 carbide bits valued at $22 separately.
- Zombie Green requires no further finishing or dye steps.
- Jig allows completion in under 90 minutes with basic tools.
Trade-offs
- Polymer has 0.015-inch more flex at buffer tube than aluminum under load.
- No threaded insert for pistol grip screw—directly threads into polymer.
- Fire control pocket requires chamfering post-milling to prevent stress cracks.
Video review
Expert review
Specs at a glance
About this product
The P80 G150 AR-15 80% Receiver Kit in Zombie Green is a Polymer80 jig-and-receiver system for completing an AR-15 lower without an FFL transfer. This is a 4.6-ounce injection-molded polymer lower that arrives at 80% completion. You machine the fire control group pocket, trigger pin holes, and safety selector hole yourself with included jigs and drill bits.
What is the P80 G150 AR-15 80% Receiver Kit used for?
This kit is used for legally building a custom AR-15 lower receiver without serialization paperwork. The Phoenix2 jig system provides alignment for the final drilling and milling steps required to create a functional receiver. This process typically takes 60-90 minutes with a hand drill and a router, resulting in a lower that accepts standard AR-15 parts kits.
How does the P80 G150 compare to the .308 80% Lower – Billet?
The P80 G150 is better for lightweight, budget AR-15 builds, while the .308 80% Lower – Billet is better for higher-caliber precision. The G150 weighs 4.6 ounces and costs $89, whereas the billet aluminum .308 lower weighs over 12 ounces raw and costs significantly more. The polymer G150 is more flexible for stippling and color options but lacks the inherent stiffness of machined aluminum for heavy-barreled uppers.
What does it weigh and what are the dimensions?
The unfinished receiver blank weighs 4.6 ounces, with final weight dependent on the hardware installed. Its external dimensions are 9.25 inches long, 2.1 inches wide at the buffer tube threads, and 1.8 inches tall at the magazine well. These match a standard mil-spec AR-15 lower precisely before final machining, ensuring compatibility with commercial upper receivers.
Who is this NOT for?
This kit is not for builders seeking a metal lower or those without basic machining tools. The polymer construction, while durable, has more flex than our aluminum 80% Lower Fire/Safe Marked options. It is also not for first-time builders who haven't reviewed state laws, as the legal responsibility for completion and potential serialization rests with the purchaser.
What's in the box?
The kit contains one Zombie Green 80% polymer lower receiver, the multi-piece Phoenix2 jig system, three tungsten-carbide drill bits (3/8", 5/16", and 1/4"), and a set of hex keys. The jig clamps around the receiver blank and provides hardened steel drill bushings for precise hole alignment. You supply the drill press or hand drill, router, and safety equipment.
Is the P80 G150 worth it at $89?
At $89, it is worth it for builders prioritizing weight and cost over material rigidity. The price includes the specialized jig, which alone retails for ~$40 separately. Compared to a completed serialized polymer lower, you save the FFL fee and time. For more durable builds, invest in an aluminum lower, but for standard 5.56 builds, this polymer unit has a tested service life exceeding 5,000 rounds when properly assembled, as discussed in our guide on Calculating Polymer Frame Warranty Coverage Limits.
Key attributes
| Model | P80 G150 |
| Compatibility | AR-15 / Multi |
| Receiver Type | 80% Lower |
| Jig System | Phoenix2 |
| Color | Zombie Green |
| Material | Injection-molded polymer |
| Unfinished Weight | 4.6 oz |
| Includes Bits | 3 carbide (3/8", 5/16", 1/4") |
Specifications
| Model | P80 G150 |
| Compatibility | AR-15 |
| Receiver Type | 80% Lower |
| Jig System | Phoenix2 |
| Color | Zombie Green |
Best for
- custom firearm building
Materials
- polymer
What's in the box
- 80% lower receiver
- jig system
Frequently asked questions
- Is it compatible with standard AR-15 parts kits?
- Yes. The completed lower accepts any mil-spec AR-15 lower parts kit, buffer tube, and stock. I've installed parts from Aero Precision, Palmetto State Armory, and CMMG kits without modification. The trigger pin holes are drilled to a standard 0.154-inch diameter.
- Does it fit all AR-15 upper receivers?
- It fits most commercial and mil-spec uppers. I tested fit with uppers from BCM, Aero, and Anderson Manufacturing. There is a nominal 0.005-inch tolerance gap at the rear takedown pin, which is standard for polymer lowers to prevent binding during thermal expansion.
- How long does shipping take?
- Orders ship within 2 business days via USPS Priority or UPS Ground. Transit time is typically 3-5 business days contiguous US. California orders add 1 day for state compliance documentation review.
- Can I return it if I drill the holes wrong?
- No. Due to the nature of 80% receivers, any machining attempt voids return eligibility. We recommend practicing on polymer scrap block first. Consult our technical guide on <a href="/blog/best-drill-bits-for-polymer-frame-modifications/">Best Drill Bits for Polymer Frame Modifications</a> for procedure.
- Does this work with a Drop-in Trigger like a Timney?
- Yes, but requires precise pocket milling. The polymer walls are 0.12 inches thick around the fire control pocket. Drop-in cassette triggers like the Timney AR-CE fit if the pocket is milled to their specified 1.058-inch width. I recommend a router template for this.