Quoted:
I have three MP5 Clones, A full size Zenith Z5RS SBR, a HK SP5K, and an Atlantic AA89 Reverse Stretch SBR. The Zenith is good to go, beautiful finish and flawless function. I bought the HK over another Zenith because I wanted a real HK while they are available. I will be having it converted to a PDW by TSC. You never know about the availability on these things.
The Atlantic has been a disappointment. It started off working perfectly but after SBR'ing has been a jamomatic. I haven't shot it in over 2 years. Ever since I picked up the Zenith.
Both Zenith and HK are great. I would never buy a US made clone. Lots of them work great, but mine didn't.
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I have a Vector V-94 that the receiver and magazine was out so spec; after I sent it out to Vector they fixed it and shoots fine. They used RCM parts so no need to add 922R parts before I SBR’ed it. The Zenith Z-5RS has been perfect! Perfect function, fit, all magazine I have used from POF, MKE, and H&K have worked without issue. As much as I like the Zenith, still wank a SP5K just because