Its a Clinton era ar-15. Marked restricted law enforcement government use only.
You will have to call Colt
100-200 USD
600-1200
100-1500 US dollars.
100-200 USD depending on calbier and condition
You will need to call Colt.
Yes
Proofhouse.com has Colt sn data. If not there, call Colt and they will tell you.
associates in science
A2 is a size of paper ( 420 x 594 mm -- 16.5 x 23.4 in)/
To a collector of Colt oddities, it might be worth a small premium of 50-100 USD.
Depends on a lot of factors. What caliber, what barrel length, is it an A1, A2, A3 or A4, does it have the box an papers it came with, any accessories? Can range from 500-1500.