z5p

I have a new in box PTR 9kt that I picked up in case I was unable to find an SP5k. Someone local popped up with a Zenith Z5-P for sale. Any reason that I should snag this over the 9kt? I already own a Z5RS and love it. I’m reluctant to send rounds through the PTR due to all of the negative...

Hoping to pickup a Z5P in the near future, however I'm liking the look and feel of the SP89/SP5K handguard more and would like a little bit extra handguard room, HK parts says the hand guards can be modified to fit MP5K-N barrels but I'm wondering what exactly needs to be done? As well as what...