I would recommend the M90L (L for Lätt = Light). It's way better then the regular jacket, even though it's made for "summer" the material is pretty warm so those who have been issued it pretty much use it the year around. If you wear body armor it will be nice. Looks much better as well.
http://www.tacupgear.se/ Sells a 100% cotton rip-stop shirt. The issue M90L has a blend of 65/35 poly/cotton and a copy can be bought here: http://www.surplus.se/component/page,shop....mart/Itemid,26/
The Surplus one is a 100% copy of the issued M90L.