Your questions are most welcome and the books that I recommended will help you in making some great conversation, I bet.
My Springfield Armory (SA) "loaded" M1A's are MA9825's according to the box they came in. If you look at the SA web site, it should identify the differences in rifles that they offer. Nice pictures and information. Anyway...
A bedded receiver whether in a bolt or M1A will aid in insuring that the receiver to stock fit is a "tight as possible" giving you the best in fit and repeatability. Special care needs to be exercised with a bedded stock.
I have decided to go with WhamoCamo synthetic stocks instead of bedding the stocks that came with my "loaded" rifles. I think its the closest thing to bedding a stock without having to do it. The fiberglass will not compress like wood or warp in rain, humid or extreme weather. Their web site is http://www.whamocamo.com
if you are interested. If you prefer wood (especially NICE looking wood), look no further than our very own SparrowHawk (Hawk's) web site at http://www.sparrowhawkm14.com/
. Great stuff from both. If I get started on raving about their products, I won't stop. :lol: So...
Match Receivers can be found with a rear lug or a rear and a forward lug. See http://www.entreprise.com/
they have some good pictures of these type of receivers. I think they refer to these as single or double lugged receivers.
I am sure that other members can offer you even more information than I can. But I hope this was of some help.
Aloha and Best Wishes,