...because they shoot back.
That looks like a nice little budget "scout" setup that JR brought to the range. Makes me want a scout-type rifle again, a concept I find myself falling in and out of lust with on a fairly regular basis.
As it is, I have a few nice, light, handy carbines, but they all are still in military stocks and have some flaw or another that annoys me. The Chilean Mauser carbine is the lightest, at seven and a half pounds, and is barely an inch over three feet long, but it could use better sights; the military-style tangent is okay, but it's not done any favors in the sight radius department by that short carbine barrel. The Venezuelan FN 24/30 carbine is the same length, but a pound heavier due to the large-ring action, and suffers from the same sight issues.
I also have an FR-8, which is probably the pick of the litter for sights, with a nice aperture setup, and is short and just under eight pounds in weight, but it could use a bent bolt handle. Oh well...
Now I want to shoot rifles this weekend.