A vented rib either comes on the gun or not, to have one put on you would need to get ahold of the manufacturer to see if it can be done.
No way to find out.
around 1954
The Winchester model 1894 rifle was never made with a vent rib barrel! the only Winchester made firearms with a vent rib barrel was Winchester shotguns.
What is your question Jack?
From me if you want the fancy grade with the golden pheasant in the grip cap, vent rib, and good condition. aquietmike@excite.com
Yes
No
You might try eBay or post in the Want to Buy sections of some of the firearms related websites.
Yes.Your Browning flat knob light weight auto-5 shotgun could be had with either a plain,or vent rib barrel.
Depends on condition, vent rib or no rib, etc. $150-$250. sales@countrygunsmith.net
No, Missouri does not require handgun registration.
50-525 usd