Oh please. You know as well as I do that a typical "tactical assault rifle" and a classic "hunting rifle" are two different things, and are designed as such.
A typical "tactical assault rifle" is designed to be extremely rugged yet lightweight, is shorter since it's often used in close quarter situations, is designed for rapid firing and minimum recoil, and trades off accuracy in the process. It probably has multiple attachment points for scopes, sights, bayonets, slings, tripods, and even grenade launchers (M-16/M-209).
A classic hunting rifle, say, 30-06 or 308, has a heavy, long barrel, has heavy wood stocks, has no recoil buffer, a single scope mount, no flash suppression, and typically has a bolt-action mechanism. The size, weight, design, and mechanics are intentional, as it's primary function is to deliver fewer rounds accurately over a longer distance.
(This disregards, of course, the "modern sporting rifle" attempt at rebranding the former to mean the later, all while letting the owner look like the local SWAT team might call him up for action at any moment.)