What would be the average price for a used 556?  I wanted get a new one in a few months from now, but I recently had a very expensive part of my truck go out. So I am going to look at used ones.

I like the 556 classic, how much does a used one go for?

TAG

I got a nib classic with red dot on gunbroker for $850 plus $25 shipping a couple months ago. Another guy got a new classic with Swiss stock for around $875 there the other day.

Wow, nice! My local gunshop's 556 all start at 1k. Thanks accomplice1.

A decent to good price on a  used one, depending on features/configuration is $900 or so.  You can usually scoop NIB ones for just around $1K on gunbroker.

I had my 2007 purchased excellent condition 556 for sale on GB for about a month with a few watchers but no bids.  I had it listed for $875.00, then dropped to $825.00 and still no bids.  The rifle has a samson front site and Midwest industries rear plus a magpul trigger guard and real swiss bayonet lug.  I was going to take a loss of about $400 to $500, but I was trying to move it so I could get a new 551A1.   Then Sig started selling the new 551a1 lowers for $375.00 and I pulled the auction and ordered the lower, as the upper on the 551a1 is the same as the 556 except the color and flash hider.  I am glad Sig started selling them, as now I will now not take a loss on my upgrade and I can probably sell the original lower and break even on my upgrade.  This is the best thing Sig has ever done as far as the whole 556 project goes.

I'm putting the 551 Lower on my Patrol SWAT. That will look cool with the SWAT upper. I replaced the rail on one of my 556 SWAT Classics with the new Swiss handgurdas and the new folder and it looks line my 551 except black