Polymer80 PF45
Polymer80, Inc. · Pistol · Discontinued · 2016
Also known as: PF45
Overview
The Polymer80 PF45 is Polymer80's iconic 80-percent unfinished pistol frame, designed to be home-completed into a fully functional Glock-pattern handgun (large-frame Glock 20 (10mm) and Glock 21SF (.45 ACP)). Sold as a frame-and-jig kit rather than a complete firearm, it is built from glass-reinforced nylon polymer and is compatible with Gen3 Glock fire-control and slide components. The frame features Polymer80's hallmark ergonomics: an aggressive grip texture, redesigned grip angle, double-undercut trigger guard, extended beavertail and a thumb ledge. Once finished with the included jig and bits, the builder installs a compatible slide assembly to produce a complete pistol. The specifications listed reflect a representative completed build on this platform.
Specifications
| Weight (empty) | 780 g (27.5 oz) |
| Overall Length | 205 mm (8.07") |
| Barrel Length | 117 mm (4.61") |
| Height | 145 mm (5.71") |
| Width | 33 mm (1.30") |
| Sight Radius | 170 mm (6.69") |
| Action Type | Short Recoil |
| Firing Mechanism | Striker Fired |
| Trigger Type | Single Action |
| Magazine Capacity | 13 rounds |
| Magazine Type | Detachable Box |
| Effective Range | 50 m (55 yd) |
| Barrel Rifling | Right Hand |
| Rifling Twist | 250 mm (9.84") |
| Number of Grooves | 6 |
| Frame Material | Polymer |
| Slide Material | Steel |
| Barrel Material | Steel |
| Finish | Black Nitride |
Calibers
- .45 ACP · primary — also known as .45 Auto, 11.43x23mm
Features
- Firing modes: Semi Automatic
- Feed systems: Detachable Box Magazine
- Safety mechanisms: Trigger Safety, Firing Pin Safety, Drop Safety
- Features: Accessory Rail, Aggressive Texture Grip, Double Undercut Trigger Guard, Extended Beavertail, Thumb Ledge, Glock Magazine Compatible, 1911 Grip Angle
Production
Production years: 2016-2024
Origin
Country of origin: United States
Designer: Polymer80, Inc.
Discontinued: 2024
Notes
BUILD PLATFORM: Sold by Polymer80 as an 80% frame-and-jig kit, NOT a complete serialized firearm. Builds a Glock 20/21SF-compatible pistol using Gen3 Glock-pattern parts. Specifications represent a typical completed build. Polymer80 discontinued all products in 2024.
Background
Polymer80 was founded in 2013 in Dayton, Nevada by Loran Kelley Jr. and David Borges, rising to prominence as the dominant maker of 80-percent unfinished pistol frames that let hobbyists legally build their own Glock-pattern handguns at home. The company became a flashpoint in the 'ghost gun' debate; following years of regulatory and legal pressure under ATF Final Rule 2021R-05F, Polymer80 ceased operations in 2024.