COMPLETE SLIDE ASSEMBLIES FOR GLOCK 43®

COMPLETE SLIDE ASSEMBLIES FOR GLOCK 43® Reviews & Ratings

Fully Assembled, Complete Slide Assembly for New Builds or Upgrading Your Factory G43


Ready to build a new custom pistol or just upgrade your current Glock® 43? Top it off with our Complete Slide Assembly for Glock® 43, available in three configurations: with a premium match-quality barrel, a ½"-28 tpi threaded barrel to accept a sound suppressor, or with a ported barrel that vents through a window in the top of the slide to counteract muzzle rise and help you keep the sights on the target for subsequent shots. No need to install a bulky compensator on the muzzle, so your new comped pistol will still fit standard holsters for the Glock® 43.



These slides come fully assembled with the barrel and all the internal small parts installed, making this 407K Slide the ideal upgrade for your factory Glock® 43 pistol or the perfect "top half" for a brand-new custom gun built on a compatible frame from another manufacturer. It features a pre-cut slot for easy, secure, low-profile mounting of a reflex red dot sight that fits the Holosun 407K footprint. If you're not mounting a red dot at the moment, we've included a lightweight reinforced polymer cover plate to neatly fill the slot. This slide comes with standard-height front and rear sights, which can serve as your primaries or a backup "iron" sights when paired with a red dot sight.

  • Comes COMPLETE with barrel, front & rear sights, and small parts installed
  • Fits Glock® 43 pistols & clonesBuilt-in mounting slot for reflex sights with the Holosun 407k footprint
  • Optic slot cover plate & recoil spring assembly also included
  • Slide machined from 416 stainless steel billet, with a Black Nitride finish
  • Choice of Solid top slide with standard barrel or ½"-28 tpi threaded barrel, OR distinctive top Window slide with ported/compensated barrel


Each of our slides for Glock® starts life as a billet of 416 stainless steel that is machined to Glock® factory specifications inside, with a tough, extremely wear-resistant black Nitride finish. This slide fits standard Glock® factory G43 frames and compatible aftermarket frames. The match-quality barrel is machined from premium 416R stainless steel alloy. The muzzle of the threaded barrel has standard ½"-28 tpi threads. The ported barrel has eight ports angled to provide just the right counterforce to muzzle rise.


On the sides at the rear, you'll find distinctive wide, shallow cocking serrations that give excellent "purchase" to rack the slide, plus a mirrored set of serrations up front that aid in manipulating the slide to press-check the chamber. Both sets of serrations make it easy to manipulate your pistol's slide from any angle and in any position. Hey, we have to admit these serrations just look very cool, too!



Whether you're assembling a custom pistol to meet specific needs, or you're upgrading a factory Glock 43 for enhanced performance and versatility, a Brownells complete slide assembly is helps you complete your project quickly and easily!

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Reviews Summary
Overall, reviews for the COMPLETE SLIDE ASSEMBLIES FOR GLOCK 43® reflect a mix of satisfaction and frustration. While some customers appreciate the quality and fit, a significant number report serious issues like failures to feed and fire. Customer service receives praise, but concerns about reliability and performance persist among many users.
What Reviewers Are Saying
Quality and Fit
36%
Many reviewers note the quality of the slide, highlighting its good machining and aesthetics. Some have found the assembly to fit well on their guns without modifications, which speaks to its initial appeal and design integrity.
Reliability Issues
56%
A considerable number of customers reported persistent reliability problems, including failures to feed and fire. While some experienced initial malfunctions that improved with use, others expressed serious concerns about the assembly's consistent performance, leading to mixed experiences.
Customer Service
28%
Reviewers frequently complimented the customer service experience, noting quick responses and willingness to assist with issues. Several users shared positive interactions with tech support, especially when addressing malfunctions or product exchanges.
Customer Photos & Videos
3
good quality for price, but required some hand-fitting
The machining and finish of both the slide and barrel seem to be good quality for the price point. However, be aware that the fit may not be perfectly "drop-in." I encountered barrel-hood interference that went beyond a standard break-in, causing the slide to hang up. Resolving it required some gunsmithing skills. Specifically, precise honing, smoothing, and polishing to get the fit right. Once properly fitted, it operates smoothly with a tight lockup and runs great. Just be aware that it might require some hand-fitting of parts if you have the skills to do so, or hiring a gunsmith.
3
Its ok
I just got a chance to fire put this gun all together and shoot it yesterday and I had several fail to fire instances. I pulled the firing pin, cleaned it and reinstalled it......still the same problem. I have ordered a new firing pin and spring and see if it improves
3
No studs on the optic cut?!
Surprised no one has mentioned there are no studs on the optic cut to keep the optic from moving. It's just the two screws keeping the optic zeroed. Need to get it to the range to make sure it feeds, fires, and extracts fine.
3
Fits and shoots
The slide looks good. It shoots true. I like the MOS cutout. It took over a 100 rounds to feed cleanly. The firing pin makes the trigger rough. For the price it is good
Would you recommend this? Yes, I would recommend to a friend
3
Disappointed
I was really excited to try this product, as I had high hopes, but unfortunately, I was quite disappointed. During my trial, I encountered several malfunctions, including issues with failure to feed. Additionally, the accuracy was lacking. Despite using a shooting rest, I struggled to zero my Holosun, as the shots were all over the place. Sadly, I’ll be returning this and exploring other options.
3
slide assembly/43x
it would be best to wait till a "break-in" period has come & gone. Because right now, it wouldn't be positive.