Just in last week at Airsoft Extreme for those who want to replace their Magpul Masada ACR buttstocks with the folding ones. You can get the colour you prefer at US$79.99... "New from Magpul are the PTS ACR Multi-Fold stocks.  These are available in 3 colors to outfit your Magpul ACR just the way you want.  Colors include Black, Foliage Green and Dark Earth."