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PIPolymer80 Inc
Polymer80 Inc · edited by Trenton Vale

Frame kits, 80% lowers and the tools that finish them

Polymer80 Inc carries the PF940 pistol frame line, the RL556v3 and G150 AR-15 lowers and the LR-308, each with the jig, bits and end mill needed to finish it. Fitment is named per model. Tracked US shipping, card or crypto checkout.

Lead guide
Function checking a finished Polymer80 pistol before the first range trip

On polymer80 function check. Written from kits finished on our own bench, not from a catalog.

Read the guide →

An unfinished frame is a machining job, not a purchase

Polymer80 Inc is laid out in the order the work actually happens: pick the frame or lower that matches the slide or upper you already own, confirm the jig and cutters in the box, then fit the small parts that decide whether the finished gun runs. Every frame kit ships with its jig, drill bits and end mill, so the listed price is the whole tooling cost rather than a starting point. The guide below covers the step most first builds skip, which is the function check before the first range trip.

The catalog

Frames, lowers, slides and parts

All 31 →
Polymer80 PF45 Glock 21 Compatible 80% Frame Kit, 10mm / .45 Polymer80 PF45 Glock 21 Compatible 80% Frame Kit, 10mm / .45 Pistol Frame Kits $123.67 Polymer80 G150 80 Percent AR15 Lower Receiver Kit with Jig Polymer80 G150 80 Percent AR15 Lower Receiver Kit with Jig AR Lowers $61.84 Polymer80 RL556v3 80 Percent AR15 Lower Receiver Kit with Jig Polymer80 RL556v3 80 Percent AR15 Lower Receiver Kit with Jig AR Lowers $103.06 Polymer80 LR-308 80 Percent .308 Lower Receiver Kit with Jig Polymer80 LR-308 80 Percent .308 Lower Receiver Kit with Jig AR Lowers $82.45 Polymer80 G150 80 Percent AR15 Lower, No Jig Polymer80 G150 80 Percent AR15 Lower, No Jig AR Lowers $45.35 Polymer80 RL556v3 80 Percent AR15 Lower, No Jig Polymer80 RL556v3 80 Percent AR15 Lower, No Jig AR Lowers $57.72 Polymer80 G150 80 Percent AR15 Lower Receiver 2-Pack Polymer80 G150 80 Percent AR15 Lower Receiver 2-Pack AR Lowers $98.94 Polymer80 G150 80 Percent AR15 Lower Receiver 3-Pack Polymer80 G150 80 Percent AR15 Lower Receiver 3-Pack AR Lowers $206.12 Polymer80 G150 80 Percent AR15 Lower Receiver 5-Pack Polymer80 G150 80 Percent AR15 Lower Receiver 5-Pack AR Lowers $329.80 p80 frame glock 17 p80 frame glock 17 Parts and Accessories $104.17
Sections
Parts And Accessories16AR Lowers8Pistol Frame Kits7
Reader questions

Answered plainly

Do you sell complete firearms or conversion devices?
No. Unfinished frames, lowers, jigs, slide assemblies and small parts only.
What is the difference between the RL556v3 and the G150?
Both are polymer AR-15 80% lowers. The RL556v3 has a solid core, flared magwell and a threadless grip design; the G150 Phoenix2 has an integrated trigger guard and a threaded, reinforced buffer tube housing. Each needs its own jig.
Does a PF940C take Glock 19 magazines?
Yes. The finished PF940C runs standard 15-round G19 magazines and larger G17 magazines. The PF940SC takes G26 10-rounders and longer magazines with a sleeve.
What tools do I need beyond the kit?
A drill or drill press, a vise, a file, safety glasses and cutting oil. The jig, drill bits and end mill are in every frame kit.
How long does shipping take?
Orders leave a US warehouse within one to two business days by tracked carrier. Frames and receivers go only to states where they are legal; parts and jigs ship everywhere in the US.