A friend has a 500 Whisper he's looking to sell, with scope, dies, ammo, bullets, etc.

$3600. Rifle comes with spider optics 1-4x24 scope, 48 pieces of once fired brass, 160x Lehigh Defense 725 grain Controlled Fracturing bullets, 15x 750 grain Barnes Solids, and 20x 1,000 grain Copper Solids by Maker Bullets, and dies. 21 loaded rounds are there as well.
Threads are 7/8 20.