SS80 80% Lower

SKU: 1500
--- Pending U.S Legislation seeks to effectively outlaw the building of 80% Lowers. For more information, click HERE to read the proposed bill. ---

NOTE: We can no longer ship 80% Lowers to New Jersey or Washington State. 

The SS80 80% Lower is sold as a separate item. To complete the lower you will also need the purchase the SS80 Builders Tool Set found here.

Here's the brand new 80% Lower that you've been waiting for… the build-your-own Single Stack 80% Lower that you complete with Glock 43 parts. 

The NEW SS80 Single Stack 80% Lower is now the best 80% lower on the market. This new version is not only new but improved in design and materials!

Based on the customer feedback and months of research and development, the SS80 is made with a much stronger and more durable nylon/polymer blend that is similar to the original 43 but actually dampens felt recoil and provides even better reliability. 

You'll notice the grip texture immediately. It provides a rock solid grip that feels good and is strikingly attractive. The frame is shaped with a double trigger undercut that allows you to get a higher grip on the gun, which reduces felt recoil and improves speed and accuracy. 

As with all 80% Lowers, at this time there is no serial number, however a serial plate is embedded in the polymer to allow you to serialize it once completed.

The SS80 is compatible with parts designed for the Glock 43.

Click HERE to read the ATF Determination Letter.

Please Note: This is the SS80 Single Stack Frame Blank (aka 80% Lower) ONLY. It does not include any of the parts or tools required to complete the lower. We carry an SS80 Builders Tool Set found here which includes the tools necessary to finish the lower. The SS80 Single Stack 80% Lower is ONLY compatible with factory and aftermarket Glock 43 parts.

Also Note: For your convenience, the SS80 Builder's Tool Set now comes with a pre-drilled Locking Block. The product shown in the video is an earlier version that required additional drilling, however you can skip this step with current and future versions of the SS80 Locking Block.

Return Policy: Due to the unique nature of this item, the SS80 lower is non-refundable once it has been modified in any way.

Looking for a Complete Upper to finish your build?
Click Here

Need a Lower Parts Kit for your frame?
Click Here

Want to spruce up your Build with Stainless Steel Pins?
Click Here
Now is your best time to purchase the SS80 lower. 

Federal law states that you can build a firearm for personal use. This law has been in effect for years, but one knows when, or if, it will be changed or repealed.

This do-it-yourself frame accepts Glock 43 factory parts.

The SS80 is the best lower available. In fact, at this time, it is the only 80% lower available that accept G43 parts. It is a very high quality polymer frame.

There are a lot of reasons to purchase an 80% lower. We are here to support your choice with the information and parts you need to make it a reality.

Return Policy: Due to the unique nature of this item, the SS80 lower is non-refundable once it has been modified in any way.
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Ratings & Reviews

44 reviews

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Overall, an excellent product


Was easy and fast to complete. The drill yourself locking block came out perfect, however take note I used a milling machine and am highly skilled in using one. Even so, I would have preferred to have the block pre-drilled as they are other Poly80 models.

The trigger wouldn't function properly when completed, and I determined the cruciform on the trigger bar wasn't assembled correctly into the ejector housing (no fault of the SS-80). I had to remove the locking block to get the trigger and ejector out, and that was very difficult to do with the trigger in place. But I got it, and all is well. It is a great shooter.

The plastic screws supplied were too short to fasten the jig together. I had to buy some longer ones .

I'd build it again!


Overall this is very nice. It was very easy to complete in less than 2 hours. It looks good, feels good and shoots great for me. I give it 4 stars instead of 5 because it is unfathomable how they let these kits go out the door with screws too short to hold the jig together! Also, despite holding the locking block in place securely when drilling it, my block does rock upward a little bit after use as others have complained. I don't see this affecting function but it is there and could have been engineered out.

Customer Service champions!


High quality product that shoots great! The support and care that comes from GS is unmatched. I will be using GS for all my parts and upgrade needs... Thank you and your team for my “Made in San Diego CA” firearm.

Beauty! Well worth the wait!!


Received my SS80 frame a couple of weeks ago and finally got it done last week. Drilling the locking block along with the frame is absolutely the way to go, Lenny is right, this had been a problem with my previous Polymer80 builds, NOT with the SS80!

I did cheat and use a drill press to drill the frame and locking block holes, clamping the jig flat to the press table and being very careful to make sure the drill bit was perfectly aligned with the guide holes in the jig. This worked perfectly and I could actually press the trigger pin through the frame with only finger pressure.

The complete Glock upper was a bit rough causing failures to feed at first, so I spent a little time smoothing the breach face, deburring the extractor and extractor rod, and breaking the sharp upper edge of the feed ramp. Took it back to the range today, and it shoots like a champ!

Don’t hesitate, build this gun.


Well worth the wait! Took less time than I expected. I’m fortunate enough to have access to a drill press so drilling was super easy.

Shoots even better than I expected. No hang ups or failures.

Super quick to build but minor issue has me guessing


From start to finish was less than one hour. I had issues similar to other reviews I read about the screws for the jig not being long enough to mate up with the nuts. I am lucky enough to have a vise that I can get around on both sides so I didn't need to remove it and turn it around. It all went together relatively easy but it seems like the hole that get drilled for the trigger is a bit low. My slide stop does not want to engage when an empty mag is in so the slide doesn't stay back. Also the trigger does not want to consistently reset making me wonder if its a problem with my finishing, the trigger, the upper or a combination of all three. Regardless I ordered a second on (in a different color) to give it another shot. With any luck its just me not being perfect thats the issues and I'll end up with a fun gun at the range.



Got my SS80 Kit in the mail this week finished it fired it and I love it!!!! Put 200 rounds down range preformed the saying goes.. THIS IS MY GUN THERE ARE MANY LIKE IT BUT THIS ONE IS MINE🤣

Great customer service


The whole teamI @ the glockstore are very professional and go Beyond to make sure that the customer is satisfied I wanna say thank you again for the frame and jig replacement you guys rock !!!

The New Pre-Drilled Locking Block Makes this a much better product!


I had purchased one of the original pre-orders, and was fairly happy with the completed product. When I saw that the SS80 was on sale for Christmas, I decided that I would try a second build and try to do better at drilling the locking block this time.

I was EXTREMELY SURPRISED & HAPPY when my second order arrived, and it included a pre-drilled locking block. It took me about 20 minutes to cut off the deny rails, drill the trigger and ejector housing pin holes, and put it all together. Having the pre-drilled locking block made things so much easier, and everything fit perfectly. I am so glad the the GlockStore made this change :)

Would def buy again if the price drops to $99 again.

Had a legitimate problem, overall good.


starting off, I love the frame, and completed, this is better than the factory 43. that said, I did have a few problems with the jig. when I got my jig, the screws that hold the thing together wouldn't grab the nut on the other side to secure the frame; I improvised, and with a few spares I had the thing finished in a few hours.

I also did not like that the block in the front that has to be cut is set into the frame at an angle, while filing it I kept nicking the frame. you need a very particular set of files for this project.

NOTE: I have not fire tested the weapon, I have only function tested it with dummies.



excellent frame! the SS80 OD green matches vickers tactical "glock green" color perfectly. i would have given this thing 5 stars if the front rails were built like the PF940/P80 rails. the rail just seems a bit too flimsy for long term use...but we will see. i would also love it if the front rails were pre-drilled as well!

Nice build


The build turned out nice. The trigger pin is a bit loose. The front bar came pre-drilled, which the directions and videos say you have to do it yourself. Not sure why....

Awesome !


This is my favorite pistol. I purchased the sand color lower, with the silver Glock 48 upper. Looks amazing, shoots amazing. The grip angle is better than a factory Glock as well. I wish I could post pictures.........

polymer 80 full size 9mm


bought the full size kit. I took my time and finished in about 2 hours. I was in no hurry at my age. took to the range and shot 200 rounds with no failures to feed or eject and accuracy perfect. all the parts went in with very little fitting and no problem with the block. I cut down the mag release since it stuck out little to far because I shot left handed. buy one take your time, use a drill press for the holes and never look back. really a great gun.

Great build but could be better.


I just completed a second SS80 because I liked the first one so much but both builds had the same problem with the pre-drilled locking block not quite lining up with the trigger pin hole you drill with the guide. To get the trigger pin in, you have to elongate the trigger pin hole in the frame to allow it to go through the locking block leaving a non round hole in the frame. Going back to the locking block that needs to be drilled so they line up correctly or fixing the alignment issue needs to be addressed.
I also agree that the locking block needs a second pin to keep the front from rotating up and modified my second build by adding two set screws, one on either side. just forward of the take down by drilling and tapping through the polymer frame and locking block. This keeps the front of the locking block from rising up.

great for making a G43L


I got one if these a few weeks ago. put it together with a stock G48 slide and barrel. got just over 100 rounds through it with 0 problems. with plus one mag extensions for a pinky rest it is about the perfect size for a carry gun IMHO. shoots great.... can we get a G36 one now please.

1st SS-80 build


Finally got to build my SS-80. I was nervous since was my first time building this. Watched the 4 videos and did what showed to do. I enjoyed building the pistol, was fun, and functions with no problems. I can’t wait to build another. Thanks!

Fun to Build


The kit works as advertised. There are plenty of videos on Youtube that show you how the build is done. The grip is solid and feels pretty good. I have 2 questions: The rear trigger housing pin seems about 3-4 mm too short. I was expecting the ends of the pin to be flush with the frame, but they are not. Is this just me ?
Second, a stock magazine is pretty tight in the mag well. Should I sand the mag well out slightly ?

great new hobby


My 1st build and it was I'm hooked and want to build more......great to learn about the functions of this firearm by building it........recommend this all firearm newbies