G80 Unfinished Receiver
Original price was: $130.00.$115.00Current price is: $115.00.
Specifications & Compatibility
Material: 4140 Heat-Treated Steel
Finish: Black Nitride
Weight: 16 oz
Dimensions: 4 × 2 × 1 in
Compatible Platforms: Glock G19, G23, G32 Gen3
Not Compatible: G17/G22 (full-size), G26/G27 (subcompact), G34/G35 (longslide), Gen4/Gen5 slides
Grip Standard: 120R Compatible
VanDerStok Compliant: Yes. Designed to meet all three criteria of the Supreme Court’s March 2025 decision.
G80 Unfinished Receiver Overview
The G80 Unfinished Receiver is a precision-machined steel fire control unit (FCU) that serves as the serialized core of your G80 build. Unlike traditional polymer 80% frames with separate rails and components, the G80 Unfinished Receiver integrates the locking block, trigger housing, and slide rails into one monolithic unit. Heat-treated 4140 steel with a black nitride finish. Built to outlast polymer alternatives.
Once finished, the G80 Unfinished Receiver accepts any OEM or aftermarket Glock G19, G23, or G32 Gen3 components. That means access to the massive Glock aftermarket: slides, barrels, triggers, and more. The 120R grip module compatibility opens up even more options, including open-source grips you can 3D print yourself.
The G80 Unfinished Receiver was designed specifically to meet the VanDerStok compliance standard established by the Supreme Court in March 2025. Made in USA (Austin, TX). Ships with pins and slide lock spring included. Current lead time is 4-6 weeks. Price: $129.99.
What Makes the G80 Unfinished Receiver Different
Monolithic Steel Construction
The G80 Unfinished Receiver combines the locking block, trigger housing, and slide rails into a single precision-machined unit. No separate rail assemblies to align. No plastic components to flex or wear. Just one solid piece of heat-treated 4140 steel that delivers tighter slide-to-frame fit and zero flex under recoil.
Black Nitride Finish
The G80 Unfinished Receiver features a black nitride finish for superior wear and corrosion resistance. Nitride outperforms Parkerizing and bluing in durability testing, making it ideal for carry guns, range builds, or harsh environments. The finish penetrates the steel surface rather than sitting on top, so it won’t chip or peel.
Integrated Design Features
The G80 Unfinished Receiver includes features that simplify assembly and improve function: integrated slide lock (no extra parts), built-in magazine overtravel stop (smoother reloads), captive trigger housing (stays in place), self-retaining coiled spring pins (easier maintenance), widened slide stop lever gap (better compatibility), and secured ejector retention (consistent ejection).
120R Grip Module Compatible
The G80 Unfinished Receiver uses the 120R grip module standard developed by Defense Distributed. Your finished receiver drops into any 120R-compatible grip, including the G80 Grip Module and grips designed for the G100 platform. Swap colors, textures, or ergonomics without changing the serialized component. Open-source grip files are available for 3D printing.
VanDerStok Compliant
The G80 system was engineered specifically to meet the Supreme Court’s VanDerStok standard (March 2025). The kit ships without all necessary components, requires uncommon tools, and takes over an hour to complete. All three criteria for federal legality, built into the product from day one.
19 reviews for G80 Unfinished Receiver
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80 PERCENT
80 PERCENT
Nate –
I really appreciate that the company didn’t cut corners on the legal design.
George Philip –
the chassis leaves the internal pin layout solid and un-notched until you drill it.
OverAndUnder –
This G80 chassis is machined flawlessly.
Jagger –
The major downside of old polymer frames was that pinning things tightly could warp the plastic walls. Because this is a solid block of high-grade steel, it handles aggressive pin pressure and heavy recoil stress without a hint of structural shifting.
Jace Lawson –
I really appreciate that the vendor didn’t just ship a raw chunk of metal; the online download files include highly detailed digital cut sheets and dimensional callouts. It completely takes the guesswork out of measuring your tab depths, making manual garage tool milling highly predictable.
OldGlory –
The lower magwell catch tab on the chassis lines up perfectly with OEM Glock magazines. Standard G19 magazines seat securely with a sharp tactile click, feed hollow points seamlessly without nose-diving, and drop completely free of the grip module whenever the button is pressed.
Wheelgun Walter –
Tracking down reliable components online can be frustrating with recent regulations, but buying this domestic steel chassis was completely smooth.
Knox –
I threw this steel receiver block straight into my Ghost Gunner 3 CNC machine. The code ran flawlessly from start to finish, and the cutter head sliced through the completion tabs with perfect, machine-shop precision. If you want a zero-effort, highly accurate build, this chassis is the way to go.
K98_Karl –
It is built to easily outlive the owner.
Henry –
The smartest thing about this steel receiver is that it isn’t married to a single frame. Once you drill the pin holes and finish the block, you can slide it into different grip module colors or configurations in seconds. It completely opens up the 120R open-source printing ecosystem.
Caleb Biggs –
If you are into the 3D-printing scene, this steel chassis is a dream component. Instead of dealing with fragile printed plastic rails that fail after a few hundred rounds, you drop this finished steel unit right into your printed grip file and get a rock-solid, incredibly durable build.
Dean –
The machined rails on this steel chassis are exceptionally flat and crisp.
Leo Vance –
You can instantly feel the premium weight and quality of the alloy they used for this receiver block.
Nixon –
I reused my aluminum G80 jig for this build and the tolerances are absolute perfection. The drill bits tracked perfectly straight through the steel sides without walking or wallowing out the frame. All my standard Gen 3 Glock compact trigger pins tapped home flush and snug.
Troy Richard –
I was a bit intimidated to cut a steel receiver block instead of plastic, but the metal tabs on the unfinished unit are engineered perfectly for home builders.
Cash_Everett –
Every internal channel for the lower parts kit is milled to master-class specs. The trigger bar moves freely without dragging on the steel sidewalls, and the safety plunger mechanics engage smoothly. The trigger pull breaks cleanly right at 5.5 pounds after a crisp take-up.
Jax Edward –
If you’ve built older polymer clones, you know how common it is for the rear rails to sit slightly lower or higher than the front block, causing vertical slide binding. Since this G80 unfinished unit is a continuous piece of solid steel, it completely fixes that issue. The slide rides dead flat over the chassis with a glassy, uniform draw length.
Marcus –
I’ve built quite a few older polymer 80% kits, but the steel chassis design of the G80 is on another level. The rigidity it adds to the finished build completely tightens up the slide action, giving you a remarkably solid handgun that feels like a true factory firearm rather than a plastic hobby project.
Matthew Dallas –
If you want to experience the true pinnacle of modern home building, this unfinished steel receiver is a mandatory buy.