yotehtr, I believe the 410 Henry is called the Axe (not the Mares Leg). The Henry Mares Leg comes in the following calibers: 22lr; 22Mag; 357 Mag/38 Spl; 44mag/44 spl and 45 Colt (which I just bought). I don't know where you live, but both the Mares Leg and Axe are legal to sell here in Pa. (at least currently). The Axe doesn't have a stock allowing firing from the shoulder, so by ATF definition, it isn't really a Shotgun but considered a non NFA weapon (much like Mossberg's Shockwave and Remington's Tac14, which are still legal to purchase in most states). Below are links to Henry's Axe and Mares Leg from their website catalog:
AXE:
Not all firearms need to fit neatly into categories like hunting, home protection, or good ol’ backyard plinking. Simply being fun to pull out of the scabbard and shoot again and again should be a category all its own. For those that join us in considering this an important category, the Lever...
www.henryusa.com
Mares Leg Rimfire and Center fire models:
Back in the heyday of the TV Western, Steve McQueen, the star of "Wanted: Dead or Alive," rode across black-and-white screens toting a sidearm like nothing any lawman or outlaw had carried before. A cut-down, modified version of repeating rifle, this recognizable shootin’ iron could be holstered...
www.henryusa.com
www.henryusa.com