A .22 conversion kit for your SIG SAUER pistol is a great way to get range time in at a fraction of the cost associated with centerfire ammunition.
For a time, SIG offered a .22 conversion kit for the classic pistols: the P220, P226, P228 and P229.
However, the company discontinued these kits and they are now only available as used kits that often sell for triple the original MSRP.