1. Hammerless 2. Auto-ejectors 3. 12 gauge 4. Don't know, how do you determine this? 5. No, only numbers are as listed earlier. Serial # 7325, receiver and forearm July 13 86, MAD 29.33, and CT 5.8 all on base of the receiver under the barrels. L.C. Smith engraved on outside of the receiver, both sides.