Hello friends I'm looking for complete set of retracting landing gear anyone can you help me to get it

Try Hobbyking.com.  Pay by paypal and get it shipped by the surface postage cost just $5 for 500 gm pack.  Its cheaper and comes home in about 15 days.  I do most of my purchases from Hobbyking

http://m.indiamart.com/ums-tech/landing-gears.html

https://www.rcsportz.com/index.php?route=product/product&path=74_102&product_id=255

http://www.rcbazaar.com/category.aspx?categoryid=58