I was told that i have 4 guns that mean more with the Barrells I have 2 Sweet-16s with 28 in. VR on them Fabrigue Nationale Herstal Belgique Acier Special C-16 Cart 2 3/4 What does that mean?? also a 20 ga. 24 in. buck special and a 12 ga. 3 in mag 28 in.it has a different vent on Barrel it says Browning Auto-5 Special steel shells _3"_28 browning Pattens Browning Arms Morgan Utah Montrel PQ. All Made in Belgum. Thanks Mac.