Polymer80 PF940C 80% Pistol Frame – 3-Pack

For builders seeking a reliable foundation for a custom compact pistol, the Polymer80 PF940C 80% Pistol Frame – 3-Pack delivers a cost-effective, specification-driven solution. Each frame in this three-unit bundle is based on the Glock 19 compact platform, requiring final milling and finishing to complete the lower receiver. Designed for intermediate and advanced gunsmiths, this 80% frame set allows you to produce three serial-number-free pistol frames, each compatible with standard Glock 19 Gen 3 components. The PF940C geometry replicates the factory frame angle and grip texture, ensuring ergonomic consistency across all three builds.

Overview

The Polymer80 PF940C 80% Pistol Frame – 3-Pack is a bulk offering of unfinished, polymer-based lower receivers. Each frame is molded from a proprietary fiberglass-reinforced nylon polymer, providing dimensional stability and impact resistance. The 80% completion status means the trigger housing pocket, fire control group channel, and front locking block pin holes are pre-formed but require final machining. This 3-pack is ideal for builders who want to produce multiple compact pistols with identical frame geometries, or for those planning to experiment with different slide configurations. The frames ship as a complete set, including jigs, drill bits, and end mills for each unit.

Features & Specs

• Frame Material: Proprietary fiberglass-reinforced nylon polymer with a matte black finish. The material exhibits a tensile strength of 18,500 PSI and a flexural modulus of 750,000 PSI, reducing flex under recoil. The grip angle is set at 17 degrees, matching the original Glock 19 ergonomics.
• Compatibility: Accepts all standard Glock 19 Gen 3 lower parts kits, slides, barrels, and magazines. The rail system is a full-length Picatinny-style dust cover (MIL-STD-1913), allowing for accessory mounting. The frame width at the trigger guard is 1.18 inches.
• Completion Requirements: Each frame requires drilling of three pin holes (trigger, hammer, and locking block), milling of the trigger housing pocket, and removal of the rear rail tab. The included jig set provides alignment guides for a drill press or hand drill. Recommended tools: 3/32-inch, 1/8-inch, and 5/32-inch drill bits; a Dremel or rotary tool for pocket work.
• Dimensional Data: Overall length: 7.44 inches. Height (from magwell base to top of grip): 4.99 inches. Weight per frame (unfinished): 2.8 ounces. Magazine capacity accepts standard 15-round Glock 19 magazines.

Who It’s For

This 3-pack is targeted at experienced firearm builders who have completed at least one 80% lower receiver previously. The PF940C frame requires precise material removal in the fire control group pocket; improper milling can result in functional failure. It is suitable for hobbyists looking to produce three identical compact pistols for range use or training, or for small-scale custom shops building customer-specified firearms. The frame is not recommended for first-time builders due to the need for accurate drilling and pocket depth control. Each frame in the pack is serial-number-free, allowing the builder to assign a unique identifier if required by local laws.

Shipping & FFL

This Polymer80 PF940C 80% Pistol Frame – 3-Pack ships directly to your residence or business address. No Federal Firearms License (FFL) transfer is required for purchase or delivery because the frame is classified as an unfinished, non-firearm component under current ATF regulations. However, once you complete the frame by milling and drilling, it becomes a firearm and must be serialized in accordance with your state and local laws. We strongly recommend consulting with a firearms attorney or your local ATF field office to verify compliance with all applicable regulations before beginning the finishing process. Some states and municipalities impose restrictions on the possession or completion of 80% frames; it is your responsibility to know and follow these laws. We do not ship to P.O. boxes or APO/FPO addresses.