Crossman 177 upper

[Microgunner]

I haven't seen one in person but if they're well built it's a must have.

[asmurff]

$650 for it. They also have a complete M4 for $89

[Microgunner]

  $650 for it.   

 

Damn!! It'd better be well built.

[Grunt Medic TXARNG]

You can find them for $600- on the 'Net.

And not only will this let you practice precision rifle (including rapid fire) in your backyard, but it's legal under the rules for NRA National Match Air Rifle (NMAR) competition.

$600- is a good chunk of change, but the costs for air and pellets are so minimal - it can allow one to develop a very high degree of skill with the centerfire rifle for little cost.  And it beats the Hell out of dry fire :)