Contact Zenith and their warranty department will discuss your concern and the resolution.I purchased an MKE Z5RS from Kelly Enterprises in Key West. Ordering process was pretty straight forward, and my local FFL received the gun via ground shipping without any issue. First impression is that it’s a well-made clone. The cocking tube pulls back smoothly and the trigger pull is surprisingly light. Although the trigger reset is not as positive as I am used to. I have a POF clone, and an SP5K. I owned an HK-94 many years ago also. The finish on MKE is very good, much better than how my POF came in. It bothered me so much to the point I had to have it refinished.
I was able to make it the range today and brought both MKE and POF. Here are my thoughts after the range session.
Accuracy is excellent at 25 and 50 yards. I can’t tell if one is better than the other. The MKE trigger has a noticeable edge over POF, and the weak trigger reset is almost negligible when slow shooting. I was following the range rule not to rapid fire. The MKE just has the iron sights for now. At 50 yards it was hard to see for me under indoor lighting. My POF has a red dot, which is a lot easier on my rapidly aging eyes. The MKE was missing the factory optics rail when I got it, which I knew ahead of time. There is a coupon code in the box, and I used it to order the rail from Zenith’s website. It’s out of stock, but I should have it in a couple weeks. It’s going to wear an aimpoint T-1. In any case, there is no complaint about the MKE action. It shoots as expected. I love how these guns handle, look and feel.
MKE had 2 FTF’s. It seems the round did not go into the chamber at all, and failed to go into battery. The first FTF simply fell out when I pulled the cocking tube back. The 2nd one was kinda cute. It somehow traveled through the upper receiver and ended up dislodging itself in the lower in front of the hammer. Both FTF’s happened on the 2nd to the last round in the same POF magazine, which has worked flawlessly in my POF and SP5K, including today. Upon some rudimentary inspection and diagnosis, I think the root cause is that the magazine fits very loosely in the MKE when the bolt is open, when there is no pressure on the magazine lip. I tried MKE/POF/HK mags, and they all fit very loosely. The mag does have some play in all the MP5’s I have, but the MKE seems to have close to twice of the movement if not more.
Overall, I am a little bit disappointed with the MKE. I was under the impression that they were better made than POF. I didn’t expect the FTF’s, and at this point I am not sure if it can be fixed without having to send it back to Zenith. Does anyone have similar experience with the fitting of the magazine? My POF has never had any problem, besides being ugly at the beginning. Now, it is my go-to. It feels like a truer clone, and I prefer the full-size over the SP5K.