Been shooting a CK Open since July 2014. About 8k rounds. Not a hiccup unless you count optic issues. Shoots flat and fast. I couldn't be more pleased.
you will need to look at dovetail adapters or get your frame drilled
http://www.cedhk.com/shop/products/JP-Mount-Adapter-Standard-Fixed-Sight-Rear-1911-Dovetail.html
The ff3 is good bang for the buck compared to the knockoffs and their warranty and customer service is good (ask me how I know) but the cmore and deltapoint are superior and worth the extra $$
for the plastic guns: http://www.bb-enterprise.biz/handgunscopemountsglockspringfield.cfm
SJC also has mounts
http://www.umtactical.com/store/c4/Mounts.html
lots of options for steel guns but you will need to drill
CKArms...partnership between Booby Kiegans and Matt Cheely
There are 2 models as seen below
3500$ brand new with slide ride Cmore...3750 as pictured in the second picture with the micro c-more
I love mine....shoots flat and runs