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P80 PF45 Large Frame Kit: Unfinished Glock-Style Frame for Custom Builds
The PF45 Large Frame Kit gives builders a blank canvas for .45 ACP or 10mm Glock-compatible pistols. This unfinished 80% frame requires basic machining to complete, offering legal customization without serialization hassles. Ideal for those who want precise fitment for aftermarket slides or unique stippling patterns. Includes jig and drill bits—just add tools, patience, and standard Glock lower parts.
Key Specifications
- Compatibility: Glock 20/21 Gen3 slides and LPKs
- Material: Glass-filled nylon polymer (same as OEM frames)
- Finish: Unmilled with pre-installed rear rails
- Included: Frame, 3/8″ drill bit, 3mm end mill bit, jig with alignment pins
- Weight: 8.2 oz (pre-machining)
Why Build with a PF45 Frame?
The PF45’s oversized grip accommodates larger hands better than standard Glock frames, with room to modify backstraps or add texture. Unlike completed frames, this kit lets you tailor rail engagement and trigger guard undercuts during machining. The open architecture simplifies installing aftermarket connectors or extended controls.
Builders report better slide-to-frame fit versus some OEM frames due to the tighter tolerances on the locking block area. The polymer formula resists flexing under heavy 10mm loads while remaining lightweight. Jig-guided milling ensures critical areas like the pin holes maintain proper spacing for reliable function.
This frame accepts Gen3 Glock 20 (10mm) and 21 (.45 ACP) slides without modification. Compatible aftermarket slides may require minor fitting—always test cycle before live fire. The design works with most standard Glock triggers, though some builders prefer a reinforced shoe for high-pressure rounds.
Note that completing an 80% frame requires a drill press or router, vise, and basic workshop skills. Total machining time averages 2-3 hours for first-time builders. Follow included instructions precisely, especially when milling the recoil spring channel.
Compatibility Notes
- Slides: Glock 20/21 Gen3 or clones (check rail width)
- Lower Parts: Gen3 Glock LPKs (G20/G21 specific)
- Magazines: OEM or aftermarket G20/G21 mags
- Not Compatible: Gen4/5 slides, .40 S&W conversions without barrel swap
Installation Overview
1. Secure the jig to the frame using provided pins. 2. Drill four trigger and rail pin holes using the 3/8″ bit. 3. Mill the recoil spring channel with the end mill bit (depth marked on jig). 4. Deburr holes and test-fit parts. 5. Install LPK per standard Glock procedures. Expect to hand-fit some components—this is normal for custom builds.
FAQ
Q: Is this frame serialized?
A: No. Unfinished frames ship without serial numbers per federal guidelines.
Q: Can I use a Gen4 slide?
A: Not directly—Gen4 slides require adapter sleeves for the recoil spring.
Q: What tools are needed?
A: Minimum: drill press, vise, calipers. Recommended: router, Dremel for cleanup.
Q: Does this work with aftermarket triggers?
A: Most drop-in Glock triggers fit, but test for overtravel with your slide.
Q: How durable is the polymer?
A: Comparable to OEM frames—thicker sidewalls than Gen5 models.
Warranty & Shipping
90-day warranty against manufacturing defects. Shipping to continental US only. Check local laws before ordering—some states restrict unfinished frames. Signature required upon delivery.
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