IIRC this man only installed them on the receiver side.which is the most important of the two sides
Now that you own a Carbine, this is a great message board to read tips, tricks & other such gun bible stuff.
http://www.perfectunion.com/vb/ruger...ll-w-pics.html
Buffers, you can make them out of rubber,leather ect. they dnt have to be these wilson combat buffers
http://www.ebay.com/itm/like/161254744026?lpid=82