Why Don't We Have Top-Loading Shotguns?

All the best firearms history channels streaming to all major devices: weaponsandwar.tv When I posted some video of the real-life Halo M90 shotgun, one of the most common questions I got was, "why don't we have top-loading shotguns like that?" Well, it's an intriguing question...so let's see if we can find the answer. https://utreon.com/c/forgottenweapons/ http://www.patreon.com/ForgottenWeapons http://www.floatplane.com/channel/ForgottenWeapons Cool Forgotten Weapons merch! http://shop.forgottenweapons.com