While nothing wrong with airsoftpeak/airsoftpark (i've ordered from them multiple times in the past with no issues) a similar part is now available more locally - airsoftdepot.com. Linking to this site, only because you have to be 18+ to get at the guns.
http://airsoftdepot.ca/catalog/produ...oducts_id=2145 in dark earth
or
http://airsoftdepot.ca/catalog/produ...oducts_id=2127 in basic black.
I used mine for my Mp5 Swordfish.. a little bit heavy for it.