The Swed AK4D stock is adjustable but its pricey. I went with a MagPul version thats also adjustable and a lot less expensive. I picked it up from HK Parts
On a side note your reference to "business clothes" reminded me of pic of a guy in a **** and tie with face paint carrying a HK in a wilderness. It was in an OLD edition of Soldier of Fortune magazine. They went on to say not all "stuff" hapepens when youre prepared