Your anti friend is ignorant. No insult intended. It is just that she does not comprehend the fact that the "style" of the gun really isn't an issue, whether it be military or conventional styled.
The REM 700 is a bolt action rifle. The AR is a semi-auto. So, they function quite differently. However, there is a nearly endless supply of tradtional non-bolt action semi-auto guns that don't have that military style to them that are just as or more lethal than an AR.
By the way, as I recall the REM 700 or a variation of it has been used by the military in sniping or sniper training. So it is a military gun.
Come to think of it, nearly all guns are military guns, have been used in the military, or have counterparts in the military from shotguns to single action revolvers to single shot rifles, semi-auto rifles and handguns, and automatic rifles and handguns.
Funny, I drive a "sports" car. Traditionally, "sports" cars are from the racing car genre. I don't race. What is even more funny is that my wife's Subaru Forester has more horsepower and is a better performance vehicle than my sports car, faster in the 1/4 mile, faster top end speed, and it corners nearly as well. If I were going to be in a chase or race, I would pick the Forester. The "style" of the gun is not a relevant issue just as it isn't relevant in relation to my sports car and my wife's SUV.