Sounds ok to me, maybe its her/his brother that wants $575 for a used 20" colt barrel. Have you not seen ads here that makes you think the members are smoking crack? BTW, the Armalite she/he is talking about was made in the 50's and less than 10K were ever built.Bayonets for this rifle go for as much as $600 USD (go figure). The rifle is actually the bigger ,smarter , brother of Eugene Stoners original AR15.Have a look in the book "The Black Rifle" for a history lesson. If you have a few mags for this kicking around, post them and see what you can get....they were $100 each 10 years ago. The new "Armalite" will not accept this magazine at all.
bobsonofbob