Oleg ...Please do not legislate....... I am sure I do not want a firing pin block on my shotguns !
Most sporting firearms "safeties" rely on sear or trigger "LOCKING", but pistols do have blocks and other fail-safe grip and lever arrangements so their quick and usually different function/purpose can be fulfilled.
When you see what most shotgun safeties consist of and the bare knife-edge of a margin they have to stop a accidental shot even when in good condition and not worn or out of adjustment and dirty, you would do as I do and use the pump or action as a REAL safety and keep the lock/bolt and ammo back out of engagement with the chamber until actually hunting/shooting.
OK...I do use the safety sometimes as quick extra insurance, but I never trust the horrid little things !
It matters little if you miss that hare or pheasant, but a little extra time to close the action makes sense to me to avoid an accident. I assure you that one accident is enough to put you off shooting for some time....if not before the court.
Perhaps you could research the market and design the first home defence "cocked and locked" shottie, who knows!
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***Big Bunny***