Polymer80 Glock 19 PF940C Combat Completion Kit


(7 customer reviews)

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Polymer 80 Compact Completion Kit (Glock 19 Size)

This finishing kit includes everything you need to complete your Polymer 80 Compact frame except the magazine.
Kit Contents and Overview

Kit Contents:

  • Frame Parts Kit
  • Glock 19 Live Free Armory Combat Slide with RMR Cut and Cover Plate
  • Rockey Precision Slide Parts Kit
  • Rockey Brass Barrel
  • Polymer Sights

Frame Parts Kit:

The frame parts kit contains the internal parts needed to complete the frame.
  • Connector
  • Slide Stop Lever with Spring
  • Locking Block Pin
  • Magazine Catch
  • Magazine Release Spring
  • Slide Lock
  • Slide Lock Spring
  • Trigger Housing Pin
  • Trigger Housing with Ejector
  • Trigger Pin
  • Trigger Spring
  • Trigger with Trigger Bar


Live Free Armory Combat Slide with RMR Cut

Our design engineers and product specialists understand tight tolerances, clean lines, and enhanced performance. But it is not just about style, it’s about giving you an edge. You get that edge by having a more positive ejection, a slide that’s lighter, and you have an all-around smoother operation. They also are available with multiple aftermarket reflective sight cuts without requiring an oversized adapter plate. Every LF19 slide is precision machined in our manufacturing facility in Melbourne, Florida, from 100% American-made 416 stainless steel. Further, its heat treated to 38-42 HRC for optimal strength and durability. If you want the best, look no further.

Caliber 9mm Luger

Material 416 Stainless Steel

Compatible Glock Full-Sized Model 19 Gen 1-3

Optics RMR Cut (Compatible with Trijicon RMR/SRO, Holosun 407C/507C, Swampfox Liberty/Justice)

Finish Cerakote

Length     6.8″

Weight     9.05 oz

Slide Parts Kit:

Rockey Precision slide completion kit featuring Made in the USA upgraded parts to fit Glock pistols. Complete and upgrade your slide components with these high-quality gun parts, perfect for a Glock upgrade or for completing your Polymer80 build.

Compatible with Glock 19 Gen 1-3 9mm slides.

Rockey Slide Completion Kit includes:


  • Firing pin
  • Standard OEM specification extractor
  • Firing Pin Spring
  • Firing Pin Spacer Sleeve
  • 2 Spring Cups
  • Extractor depressor plunger assembly
  • Back Plate
  • Firing pin safety
  • Firing Pin Safety Spring
  • Channel Liner
  • Recoil Spring and Guide Rod




This is a drop in replacement Glock 19 Barrel in 9mm. This barrel features standard rifling and quality craftsmanship, making it perfect for drop in replacement of your stock Glock barrel or for your Polymer 80 build. The barrel is made from 416R Stainless Steel excellent durability and hardened with a DLC Finish. These Barrels are manufactured for Rockey Brass by a quality US manufacturer and are warranted to be free from defects in materials and workmanship.

  • Made in the USA
  • Glock 19 Gen 1-4 compatible
  • Flush Cut and Crowned
  • 416R Steel
  • 1:10 Twist Conventional Rifling for compatibility with cast bullets
  • SAAMI Spec 9mm Chamber
  • DLC Finish

DISCLAIMER: We do not provide legal advice or legal counsel. It is your responsibility to understand the respective State laws and Federal laws. This product is to be installed by a competent gunsmith. No liability is expressed or implied for damage or injury which may result from installation or use of this product. We do not provide build and/or gunsmithing advice.

“GLOCK” is a federally registered trademark of Glock, Inc. and is one of many trademarks owned by Glock, Inc. or Glock Ges.m.b.H. is not affiliated with nor endorsed by Glock, Inc. or Glock Ges.m.b.H.

Additional information

Slide Style

Black Slide with RMR Cut and Cover Plate, FDE Slide with RMR Cut and Cover Plate, Tungsten Slide with RMR Cut and Cover Plate

7 reviews for Polymer80 Glock 19 PF940C Combat Completion Kit

  1. Shelby Ruminer

    I’m very happy with this for my first build would buy again

  2. Dan

    Being able to buy the slide, parts, barrel & guide rod as a bundle was a huge time saver. Getting it with an RMR cut slide & ported barrel was a big plus. This is the best bundle I found and price was great. Got to shoot my build yesterday and everything worked well. The only issue I had was a couple FTE and this was likely the result of lower powered ammo or slower burning powder. I was shooting a mix & when I saw flame shoot out the top, I would get a FTE. Recoil was light, not sure it was lighter than my G19 gen 5 but quite comfortable & manageable.

  3. Walter M

    Amazing looking and feeling slide (solid, grippy and sexy), the threaded barrel looked great as well, part kits a whole different story. The slide parts kit was the most troublesome. Considering how easy the firing pin sleeve went in, (props that tool was included) I thought that this is going to be a piece of cake, not. Firing pin cups were oblong not round, firing pin itself was oversized (it could be the slide firing pin channel, don’t know) and it would not drop in the hole, it got stock half way – thank god I order extra sleeves. Using 2000 sandpaper, rounded the cups and seemed to help but still got got stock 3/4 of the way in and would not drop into place by itself. After a couple of hours of sanding and polishing the firing pin section below the spring cups, it finally dropped in and worked as it should. Trigger shoe also had to be groung and polished to work properly, all a all a 10 min job ended taking 4 hours (sand, polish, clean, fit – again and again). Next time I will buy the slide separately and get upgraded or brand name parts kits.

  4. Boog

    Ok for my first build:1. First I wanted to give a shout out MGB and all his multitude of videos and related blogs and partners with detailed 80% builders instructions and help. I watched a ton of them and the details, tips and tricks he covers are invaluable. I followed most, if not all his suggestions. 2. I had an extra Gen 3 stainless steel threaded barrel from another Glock I had. So I saved some Doe Rae Me on that. Tested and true!3. I ordered a Polymer 80 Glock 19 PF940C 80% Compact Pistol Frame Kit in Cobalt and Rockey Brass Frame Parts Kit combo. (Best como price I could find).4. A black Live Free Armory G19 Combat Slide with an RMR Cut and Cover Plate. A Rockey Precision Slide Parts Kit combo. (Best combo price I could find).5. Rockey Brass Fiber Optic Suppressor Height Sights. (Best como price I could find and similar in design and function to other brands).6. I got a great deal from Primary Arms on a Holosun HS507C-X2 Reflex Red Dot Sight with ACSS Vulcan reticle. (This is the best pistol reflex sight bar none beside the one that has a green reticle, but that’s a separate review).7. To avoid any ejection issues that are known with the Gen 3 ejector and at the advice of MarineGunBuilder, I purchase a 30274 for install. The build went off without a hitch. Was cheaper to build than to buy, and was absolutely fun to complete. I haven’t taken it to the range for testing but it function tested great. Nice and smooth (like butter) and as MGB would say, “First Time Quality. “Would I do it again? As it stands right now pre-field testing. Absofreakinglootly!! Thanks Rockey Brass, MGB, Primary Arms. To date I’m very pleased with everything. If there are problems at the range and if I have any issues I will update this review. Great group to have at your 6. PS I’ve since ordered more.

  5. Axel Barrientos

    this kit was perfect all the parts fit with out a problem im lucky that i found rockey brass good products and better prices one last thing the shipping is extremely fast

  6. Doug

    Put 125 rounds through this kit ran ok about 30 light primer strikes 10 stove pipes but seems like an okay slide biggest disappointment says Made in the USA parts kit came in a bag said made in Taiwan. Super heavy trigger pull 7.14 lbs on 3 pulls

  7. Caleb Williams

    Awesome products

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