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Most Helpful Negative Review
Good kit for the small pieces but....
This is the cheapest way to get all the upper parts for a Glock 19 Gen 5 (minus the slide itself) but that being said the recoil spring is not to OEM standard. I shot less than 500 rounds and then the black end cap gave out and failed and then parts all over the place. I do recommend getting this kit then just getting an OEM recoil spring from the glock store because this one was well under par. 4 star for the rest of the pieces. 1 star for the recoil spring.
It fits well i guess
Bought a kit for a buddies spare 19x upper. Fits well decent enough.
Pros:
- Great kit
Cons:
- None
Would recommend: Yes
Decent Kit, But Needs Improvements
I recently installed the Zaffiri Precision Glock 19 Gen 5 Upper Parts Kit, and while the quality of most components is solid, I encountered a significant issue with the included recoil spring assembly.
Build Quality & Fitment
The extractor, firing pin, and safety plunger are well-machined and fit without any major issues in both factory and aftermarket slides. The springs had proper tension, and overall, the parts looked well-made. However, the recoil spring assembly was the weak point of this kit.
Functionality & Issues
During initial testing, I experienced cycling and function failures, leading to inconsistent performance. After troubleshooting, I determined that the included recoil spring was the culprit. It was not allowing the slide to fully cycle, which caused failure to return to battery issues. I replaced it with a factory OEM Glock recoil spring, and after that, the pistol ran flawlessly.
Instructor’s Perspective
As a firearms instructor, reliability is my top concern. While most of the kit is well-made and functional, the recoil spring issue is a big downside. If I have to replace a critical component right out of the box, it lowers my confidence in the overall package.
Final Thoughts
The Zaffiri Precision Upper Parts Kit is a decent option for a custom Glock 19 Gen 5 build, but be prepared to swap out the recoil spring for a factory OEM part if you run into cycling issues.
Would I recommend it? With caution. If you’re okay with replacing the recoil spring,...
Read More...
Build Quality & Fitment
The extractor, firing pin, and safety plunger are well-machined and fit without any major issues in both factory and aftermarket slides. The springs had proper tension, and overall, the parts looked well-made. However, the recoil spring assembly was the weak point of this kit.
Functionality & Issues
During initial testing, I experienced cycling and function failures, leading to inconsistent performance. After troubleshooting, I determined that the included recoil spring was the culprit. It was not allowing the slide to fully cycle, which caused failure to return to battery issues. I replaced it with a factory OEM Glock recoil spring, and after that, the pistol ran flawlessly.
Instructor’s Perspective
As a firearms instructor, reliability is my top concern. While most of the kit is well-made and functional, the recoil spring issue is a big downside. If I have to replace a critical component right out of the box, it lowers my confidence in the overall package.
Final Thoughts
The Zaffiri Precision Upper Parts Kit is a decent option for a custom Glock 19 Gen 5 build, but be prepared to swap out the recoil spring for a factory OEM part if you run into cycling issues.
Would I recommend it? With caution. If you’re okay with replacing the recoil spring,...
Read More...
Pros:
- None
Cons:
- recoil spring assembly needed replacement
Best Used for:
- fun-gun
- experimental use
Would recommend: Yes
Missing extractor
Kit was missing extractor. I used a glock factory extractor and everything functioned on my safari precision slide.
Would recommend: Yes
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