FrameSmith · edited by Theo Ridgeway
Precision starts at 80%
FrameSmith is the frame-first Polymer80 store: PF940C, PF940v2, PF940SC, PF9SS and PF45 kits with their jigs, plus RL556v3, G150 and LR-308 lowers. Written by builders who finish these kits themselves.
Lead guide
Rail tabs, barrel block, pin holes: the three cuts on a Polymer80 frame
On polymer80 rail tabs. Written from kits finished on our own bench, not from a catalog.
Read the guide →Editor's picks
Polymer80 PF940SC 80% Subcompact Frame Kit (Glock 26/27 fit)80% Frames · $127.80
Polymer80 PF940C 80% Compact Frame Kit (Glock 19/23 Gen 3 fit)80% Frames · $127.80
Polymer80 PF9SS 80% Single-Stack Frame Kit, Flat Dark Earth (Glock 43 fit)80% Frames · $123.67
Polymer80 PF940v2 80% Full-Size Frame Kit (Glock 17/22/34 fit)80% Frames · $127.80
Why the frame decides the whole build
Every other part of a pistol build is replaceable. The frame is the one you finish yourself, and once the rails are cut there is no undo. FrameSmith is written around that fact: the picks up top are the frames we would hand a first-time builder, the catalog rows below are ordered by how forgiving each frame is to finish, and the lead guide is the technique we use on the bench. Slides and parts are here too, but the frame comes first.
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Top Brands
GlockStriker-fired polymer pistols.
Smith & WessonPistols, revolvers & M&P.
RugerRifles, pistols & 10/22s.
Sig SauerP320, P365 & MCX.
Springfield ArmoryHellcat, XD & M1A.
Remington870 shotguns & 700 rifles.
Beretta92 pistols & shotguns.
Mossberg500/590 shotguns.
Colt1911s & AR-15s.
CZPistols & rifles.
TaurusValue pistols & revolvers.
WinchesterLever-actions & shotguns.
The catalog
Frames, lowers, slides and parts
Polymer80 PF45 80% Large Frame Kit (Glock 20/21 fit, 10mm and .45 ACP)
80% Frames
$123.67
Polymer80 G150 Phoenix2 80% AR-15 Lower Receiver Kit with Jig
80% Lowers
$61.84
Polymer80 RL556v3 80% AR-15 Lower Receiver with Jig Kit
80% Lowers
$103.06
Polymer80 LR-308 / AR-10 80% Polymer Lower Receiver with Jig
80% Lowers
$82.45
Polymer80 G150 Phoenix2 80% AR-15 Lower Receiver Only
80% Lowers
$45.35
Polymer80 RL556v3 80% AR-15 Lower Receiver Only (no jig)
80% Lowers
$57.72
Polymer80 G150 Phoenix2 80% AR-15 Lower, 2-Pack
80% Lowers
$98.94
Polymer80 G150 Phoenix2 80% AR-15 Lower, 3-Pack
80% Lowers
$206.12
Polymer80 G150 Phoenix2 80% AR-15 Lower, 5-Pack
80% Lowers
$329.80
Polymer80 PF9SS 80% Single-Stack Frame Kit, Gray (Glock 43 fit)
80% Frames
$123.67
Reader questions
Answered plainly
Can I return a frame I have started?
No. Unused, unopened kits can be returned within 30 days. A frame or receiver that has been drilled or cut cannot be returned.
Is the PF9SS the same as the PF940SC?
No. The PF9SS is a single-stack frame for Glock 43 slides and 6-round magazines. The PF940SC is a double-stack subcompact for Glock 26 and 27 slides.
Do you ship to California?
We do not ship unfinished frames or receivers to states, cities or counties that prohibit them. Jigs, slides and parts ship everywhere in the US. Check current law where you live before ordering.
Do I need an FFL to buy an 80% frame or lower?
An unfinished frame or receiver is not a firearm under federal law, so it ships to your door in most states. Several states and cities restrict or ban unserialized frames. Check your local law before ordering; we cannot ship where they are prohibited. This is general information, not legal advice.
Which Glock slides fit each Polymer80 frame?
PF940C: Gen 3 G19, G23, G32. PF940v2: Gen 3 G17, G22, G24, G31, G34, G35. PF940SC: Gen 3 G26, G27. PF9SS: G43. PF45: Gen 3 G20, G21. Gen 4 and Gen 5 slides need a conversion kit or a different frame.