Many of Cabelas' offerings are Piettas. However, springs are very universal in the Colt clone business. The best springs I have run across if you want to smooth things up are Wolff Springs. Check the website. They deliver promptly. The Uberti is referred to by Wolff as a "Regulator", but a Uberti is a Uberti as far as the length of the mainspring. The other Wolf length is for the Colt and Hartford which are a bit longer. I put Wolff mainspring and (wire) trigger/bolt springs in many Ubertis and they are very smooth. Wolff makes both wire and flat type trigger/bolt springs. They also don't break anywhere near as often as an Italian made spring.