I bought this about a year ago and have never shot it, the gun has never been fired. When I purchased it did not have a box so I am unsure of the specific model number , though I believe it to be a colt le6920 from assault rifle ban era. (New old stock). If anyone knows exactly what model this is, and what it’s be worth if I sold it myself or what to look for value wise on a trade with a gun shop that would be really helpful. I am a novice with these rifles, so any input is appreciated. Thanks in advance.
Also. Can I shoot 5.56 out of this even though it’s stamped 223? They sold me 556 when I bought the gun, but I’m doubting that I can (or should) put 556 through it.