If you are working on a Polymer80 build or even wanting to overhaul your existing Glock, there are a ton of parts on eBay.  You can find some good deals but I would recommend you stick with reputable brands and sellers. For the sellers, I would look for lots of sales – at least over 30 and ideally hundreds – and very good scores.  There are cheap imports/knock-offs showing up so beware no-name stuff.

The following are all real-time listing on eBay so you can go there and find parts.

Polymer 80 PF940C Kit , Glock No Frame , Polymer 80.

$20.50 End Date: Wednesday Sep-18-2019 8:04:01 PDT Buy It Now for only: $20.50 Buy It Now | Add to watch list

Polymer80 PF940v2,C&CL Magwell - Low Profile - ISLE MFG

$24.99 End Date: Saturday Sep-7-2019 13:16:41 PDT Buy It Now for only: $24.99 Buy It Now | Add to watch list

Polymer80 PF940v2,C&CL Magwell - High Profile - ISLE MFG

$25.99 End Date: Sunday Sep-1-2019 7:12:54 PDT Buy It Now for only: $25.99 Buy It Now | Add to watch list

Glock 27 OEM Style Slide Std Sights Black G27 Gen 3 940SC Polymer 80 OEM Style

$159.99 End Date: Sunday Sep-22-2019 12:15:34 PDT Buy It Now for only: $159.99 Buy It Now | Add to watch list

NEW GLOCK OEM GEN 3 G 19 COMPLETE Slide Kit fits poly 80

$399.99 End Date: Monday Aug-26-2019 15:20:10 PDT Buy It Now for only: $399.99 Buy It Now | Add to watch list

Glock 19 OEM Style Slide Std Sights Black G19 Gen 3 940C Polymer 80 OEM Style

$159.99 End Date: Sunday Sep-22-2019 12:18:21 PDT Buy It Now for only: $159.99 Buy It Now | Add to watch list

Steel City Arsenal Magwell for Polymer80 PF940V2 Full Size Frame Battleworn Gray

$79.99 End Date: Tuesday Sep-17-2019 17:11:26 PDT Buy It Now for only: $79.99 Buy It Now | Add to watch list

AlphaWolf Slide for Glock 20 Polymer80 Gen 3 w/ Dovetail and OEM Rear Serrations

$199.95 End Date: Sunday Sep-1-2019 8:36:22 PDT Buy It Now for only: $199.95 Buy It Now | Add to watch list

Polymer 80 PF940C Glock 19 rail protector

$40.00 End Date: Tuesday Sep-3-2019 11:06:39 PDT Buy It Now for only: $40.00 Buy It Now | Add to watch list

Slide for Glock 19 P80 Gen 3 Polymer80 with Dovetail Cut in Stainless Steel

$149.95 End Date: Wednesday Sep-18-2019 19:11:24 PDT Buy It Now for only: $149.95 Buy It Now | Add to watch list

CUSTOM SERRATTED SLIDE FOR GLOCK 19 GEN1,2,3,Poly80 | RMR Cut For Trijicon

$185.00 End Date: Tuesday Sep-3-2019 22:05:31 PDT Buy It Now for only: $185.00 Buy It Now | Add to watch list

Custom Slide - For Glock 19 GEN 1,2,3, & Polymer80 Stainless Steel - BRAND NEW

$155.00 End Date: Tuesday Sep-10-2019 15:31:33 PDT Buy It Now for only: $155.00 Buy It Now | Add to watch list

CUSTOM SLIDE | STAINLESS STEEL BLACK CERAKOTE - FOR GLOCK 19 GEN 1,2,3,Polymer80

$150.00 End Date: Friday Sep-20-2019 14:52:00 PDT Buy It Now for only: $150.00 Buy It Now | Add to watch list

For GLOCK 9 millimeter Extended Upper and Lower TiN Gold Kit GEN 3 G 17 / 19

$208.95 End Date: Monday Sep-2-2019 16:38:15 PDT Buy It Now for only: $208.95 Buy It Now | Add to watch list

G34 Glock Slide Gen 3 - Black Cerakote - Works W/ Polymer80

$349.00 End Date: Thursday Sep-19-2019 12:24:42 PDT Buy It Now for only: $349.00 Buy It Now | Add to watch list

Extended Magwell for Polymer 80 Glock Frame

$20.00 End Date: Thursday Aug-29-2019 8:36:31 PDT Buy It Now for only: $20.00 Buy It Now | Add to watch list

Full Replacement Parts Kit For Gen-3 Glock 19 EXTENDED PARTS Polymer-80 Spectre

$69.50 End Date: Sunday Sep-22-2019 2:18:14 PDT Buy It Now for only: $69.50 Buy It Now | Add to watch list

Bare Slide - For Glock 19 GEN 1,2,3, & Polymer80 Stainless Steel - BRAND NEW

$145.00 End Date: Tuesday Sep-10-2019 15:39:36 PDT Buy It Now for only: $145.00 Buy It Now | Add to watch list

CUSTOM SLIDE | MATERIAL 17-4 PH BLACK CERAKOTE - FOR GLOCK 19 GEN 1,2,3

$180.00 End Date: Friday Sep-13-2019 17:26:42 PDT Buy It Now for only: $180.00 Buy It Now | Add to watch list

Full Replacement Parts Kit For Gen-3 Glock 17 Polymer-80 Spectre PF940-v2 LPK

$91.97 End Date: Friday Sep-20-2019 17:10:48 PDT Buy It Now for only: $91.97 Buy It Now | Add to watch list

Polymer80 PFPSKITBR PF-Series Bronze/Red Slide Parts Kit For Glock Gen 1-4

$95.00 End Date: Tuesday Aug-27-2019 15:05:34 PDT Buy It Now for only: $95.00 Buy It Now | Add to watch list

Glock 27 Raptor Series Slide w/ Std Sight Black G27 Gen 3 940SC Polymer 80

$209.99 End Date: Sunday Sep-22-2019 12:06:02 PDT Buy It Now for only: $209.99 Buy It Now | Add to watch list

Glock 19 gen 3 complete upper Brownells RMR slide compensator barrel polymer 80

$419.99 End Date: Tuesday Sep-17-2019 18:30:29 PDT Buy It Now for only: $419.99 Buy It Now | Add to watch list

For GLOCK Gen 1-3 G17 or Polymer 80 Lower Parts Kit OEM 9 millimeter Choose Kit

$51.95 End Date: Wednesday Sep-18-2019 8:05:17 PDT Buy It Now for only: $51.95 Buy It Now | Add to watch list

Steel City Arsenal Slim magwell for Polymer 80 PF940C Frames- Anodized Black

$74.99 End Date: Tuesday Sep-17-2019 17:11:25 PDT Buy It Now for only: $74.99 Buy It Now | Add to watch list

Stainless Glock 34 Gen 3 Slide Window Cut Zev Compatible Fits P80/Polymer 80

$229.99 End Date: Friday Sep-13-2019 6:47:31 PDT Buy It Now for only: $229.99 Buy It Now | Add to watch list

G19 Glock Slide - Gen 3 - Cerakote Black - Works w/ Polymer 80

$299.00 End Date: Sunday Sep-15-2019 15:46:35 PDT Buy It Now for only: $299.00 Buy It Now | Add to watch list

Stars & Stripes 4th of July Design Slide for Glock 19 P80 Gen3 Polymer80

$269.95 End Date: Sunday Aug-25-2019 20:44:26 PDT Buy It Now for only: $269.95 Buy It Now | Add to watch list

GLOCK 19 Gen 1-3 Lower Parts Kit OEM 9MM Polymer 80 PF940C Complete OEM Kit G19

$48.99 End Date: Wednesday Sep-18-2019 4:22:23 PDT Buy It Now for only: $48.99 Buy It Now | Add to watch list

Glock OEM Lower Frame Parts Kits For Glock Gen 1-3 G17 And Polymer 80

$50.95 End Date: Tuesday Sep-3-2019 19:28:01 PDT Buy It Now for only: $50.95 Buy It Now | Add to watch list

For GLOCK Gen 1-3 G17 or Polymer 80 Lower Parts Kit OEM 9 millimeter Choose Kit

$79.95 End Date: Wednesday Sep-18-2019 8:05:17 PDT Buy It Now for only: $79.95 Buy It Now | Add to watch list

For GLOCK Gen 3 G17 / 19 OEM Upper and Lower Parts Kits 9 millimeter Plus Tools

$134.95 End Date: Thursday Sep-19-2019 19:02:48 PDT Buy It Now for only: $134.95 Buy It Now | Add to watch list

GLOCK 17 Gen 3 Lower Parts Kit Polymer 80 940v2 940CL Complete Kit G17 US MADE

$48.99 End Date: Sunday Sep-22-2019 7:16:19 PDT Buy It Now for only: $48.99 Buy It Now | Add to watch list

Polymer 80 holster pf940cv1 W/aplc black Raptor kydex holster IWB Glock p80

$50.00 End Date: Sunday Sep-1-2019 17:26:35 PDT Buy It Now for only: $50.00 Buy It Now | Add to watch list

Full Replacement Parts Kit For Gen-3 Glock 17 Polymer-80 Spectre PF940-v2 LPK

$47.03 End Date: Friday Sep-20-2019 17:10:48 PDT Buy It Now for only: $47.03 Buy It Now | Add to watch list

Fits Glock Gen 2-4 P80 Aluminum Flat / Curved Trigger - Gold / Black POLYMER 80

$115.00 End Date: Friday Aug-23-2019 10:23:13 PDT Buy It Now for only: $115.00 Buy It Now | Add to watch list

Full Replacement Parts Kit For Gen-3 Glock 17 Polymer-80 Spectre PF940-v2 LPK

$42.95 End Date: Friday Sep-20-2019 17:10:48 PDT Buy It Now for only: $42.95 Buy It Now | Add to watch list

G17 Gen3 Glock Slide - Stormtrooper Theme Cerakote - Works W/ Polymer 80

$349.00 End Date: Tuesday Sep-10-2019 9:27:10 PDT Buy It Now for only: $349.00 Buy It Now | Add to watch list

Glock 26 Match Grade Barrel SS TiN Gold G3 G4 Gen 3 4 Polymer80 SS gen3 gen4 g26

$99.99 End Date: Friday Sep-20-2019 17:35:46 PDT Buy It Now for only: $99.99 Buy It Now | Add to watch list

polymer 80 pf940sc iwb kydex holster black carbon fiber

$45.00 End Date: Saturday Sep-21-2019 18:27:39 PDT Buy It Now for only: $45.00 Buy It Now | Add to watch list

If you find this post useful, please either buy something using one of the links to eBay and Amazon. With Amazon, if you click on one of our links and then buy something else – even unrelated stuff like clothes, electronics and groceries – we get credit and it would be hugely appreciated. Doing something like the above will help us fund continued development of the blog.