These things are absolutely wonderful. Super easy to install. Remove stock base pad with any type of punch or screwdriver, I used a really fine flat head for a few reasons. You’ll need it to pop out the spring from the plug that needs to be taken out. And when sliding the ZR pad forward it can depress the detent and slide past the lip of the magazine much easier.

This is a 20 and 30 round with the pads in HSGI extended pistol TACOs

This was money well spent. It was easy to install. And no more take down screw. And the pistol shoots better now.

Firing Pin, main spring goes in no problem. Sear spring is shorter than the original in my Sig 1911/22 and cannot be use. So far the indentation on the snap cap shows a stronger strike by firing pin. Looking forward to this weekend to see if this will solve my issues. Also had the ultimate kit installed a year ago.

Shipped amazingly fast. Super responsive customer service. Product arrived within a few days and was exactly as described. Impressively tight fit to the ZR9 80% Lower I ordered along with it. This was my first experience with ZRTS and it couldn’t have gone better. Would highly recommend doing business with them.

Shipped amazingly fast. Super responsive customer service. Product arrived within a few days and was exactly as described. Can’t wait to mill this guy out and get it to the range. This was my first experience with ZRTS and it couldn’t have gone better. Would highly recommend doing business with them.

A must have for any Sphinx owner. This will definitely make to fall in love with the Sphinx all over again. Fit and finish is absolutely perfect. The logo at the bottom is a very nice touch. Super fast shipping If you own a Sphinx, this is a must have item…you will not be disappointed. The only con I have is excessive shipping cost, which is the reason for giving this review only 4 stars.

This was my first 80% from ZR9 and I had ordered a new jig which the boys were not familiar with and they had made a huge mistake while milling the first lower. They had tried to cover it up and after talking to ZR9, they send me an additional lower which is now in action. Their staff is extremely knowledgeable and handled my situation extremely fast while being courteous. I really appreciate working with them to complete this 9mm build and I must say their 80% dedicated lowers are definitely one of the best I’ve seen and worked with. I love the fact that all springs and detents are held in place with allen screws instead of pins, making this one of the easiest builds on the market today. I would highly recommend this lower to anyone who is building a dedicated 9mm.

Extremely quick turn around.
Cut my 16” barrel down to 6,” can’t speak on the accuracy but I doubt there will be any issues. Highly recommend this service.

Sent it in via USPS and it got there in 2 business days. ZRTS finished the job in a day and immediately sent it back to me via UPS. Everything was great so far except that UPS took forever to get it back and delayed my delivery by 2 days (not ZRTS’s fault, but it would have been nice to get it back sooner).

Anyways, the red dot sight now sits lower and closer to the bore axis which makes aiming feel a lot more natural and quick. It’s a beautiful and great priced job and I could not recommend this service enough.

Sent it in via USPS and it got there in 2 business days. ZRTS finished the job in a day and immediately sent it back to me via UPS. Everything is great so far except that UPS took forever to get it back and delayed my delivery by 2 days (not ZRTS’s fault, but it would have been nice to get it back sooner).

Anyways, the red dot sight now sits lower and closer to the bore axis which makes aiming feel a lot more natural and quick. It’s a beautiful and great priced job and I could not recommend this service enough.