[Kozzie]

I used to own a KSC Glock 17 it's a great pistol. Nice action, solid blowback and accurate. I sold it to a buddy of mine a couple of weeks ago and I miss it already. I can't attest to the long term durability but I took it apart before I sold it for cleaning / re-lubing and with a couple thousand rounds through it the internals were still in like new shape. I really liked the mags, no gas leakage as you fill them and the feeder tab locks down to make loading easier. As previously stated make sure you get System 7/ NS2

I have to agree about the hop up, the design is over all inferior to the other viable Glock option out there (Tokyo Mauri) and the rubber does get pretty oily. KSC does however come with a metal slide so that's a nice benefit if you don't want to buy one for the TM. If you decide to change out the rubber do it over a box because they use a tiny ball bearing as the bucking and it's very easy to lose. This is where the TM hop-up unit surpasses the KSC because TM uses a two prong bucking similar to a shredders concave bucking for an AEG which translates to better accuracy and fewer flyers. That being said the KSC is still an accurate pistol.