I used to have a Beretta AR-70. The weapon will probably by worth $1,500.00 to $1,750.00 (at Dallas area gun shows). It's an excellent weapon and was always extremely accurate!
Two downsides - one, the handguard had a tendency to snap off the barrel and break (which is a bitch, since replacements are very hard to find) - two, the mags were going for around $100.00 each, and that was five years ago!
I've heard that Beretta or some supplier had made a device that could be snapped onto M-16 mags that would permit their use in the AR-70, but I've never actually seen one! You can just imagine how expensive those puppies would be!
If you're gonna buy one, get as many mags with the deal as you possibly can - you will likely find no others.
Eric The(ITradedMineOutrightForAValmetHB76)Hun[>]:)]