This metal version of the SIG PRO that uses System 7 magazine is at War 4 Toys International for US$147... "SIG PRO is a new series of SIG SAUER by KSC. SP 2022 is a modified version of the SP 2009/2340. It entered service with the French Police and Gendarmerie in 2002 for a planned lifetime of 20 years.
Another custom AEG from War 4 Toys International that they released 06 August 2010. This time it is based on the APS M4 blowback AEG. For US$190, you get an AEG, Hi-Cap Magazine, Red Dot Sight, Cleaning Rod, and sample BBs. Markings on the AEG is still about APS, they didn't change the metal body for anything you may fancy. Pricing does not yet include shipping costs.