$300-500 for a 3-day training course and 2000rds of XM193 at $199/1000. That would leave you between $300 for meals and hotel or nifty gun gadgets and you would feel much more confident and capable with the rifle.
However, if you just prefer the gadgetry aspects of shooting more, there is the mythical and as-yet unseen Leitner Wise MRS upper in that price range. This is a short-stroke gas piston AR that can do 40,000rds with no cleaning, has a built-in uninterrupted rail like the LMT and also has a quick change barrel that allows you to change any standard AR barrel without tools in seconds (basically two levers on the side of the rail system that secure and lock down the barrel with better engagement than the current barrel nut system).
Of course all of this is manufacturer claim since nobody I know has seen one and they aren't in production yet; but will be at some as yet unspeicifed date this year.
However, the short stroke gas piston upper is a production item and the few people who have one seem very pleased with them, though it seems they heat up the handguards a bit more since they vent excess gas just behind the front sight base.
