Do you need more than a nipple and a nipple spring?

e-gunparts has both of those listed asin stock on thefirst page below:

http://www.e-gunparts.com/DisplayAd.asp?chrProductSKU=953090&chrSuperSKU =&MC=

All of the Remington 700ML parts listed:

http://www.e-gunparts.com/productschem.asp?chrMasterModel=0860z700ML