Where can I buy the MSG 90 Buttstock and where can I buy a good barrel for my HK 91 clone?

A guy on the HKPRO.com site is selling a new MSG 90 buttstock for $400.He goes by GM.Hope this helps....

For the MSG-90 stock you can try...
McDonald Tactical Supply -- $310 plus shipping
http://www.mcdonaldtactical.com
970-222-7505

Bugs N Bullets -- $340 plus shipping
406-782-6251

Neither of them stock the MSG-90 stock, but will order it with money up front.

Another option is to post a WTB request on HKPRO.com or http://www.sturmgewehr.com/webBBS/parts.cgi

I took that route when I found out that the two vendors above would have to order and it might take 4-6 weeks.  After posting the WTB, I got a response in a couple of days and ended up getting a NIB stock for $315 shipped.

Try www.hkpartsonline.com for the stock.  For the barrel, the best are available from Murray Urbach in Texas.  Try Jayson at InvestmentGradeFirearms.com too.