Actually, call it simply that: A rifle. Semi-Automatic if you want, but it's basically a rifle for Christ's sake, militia be d***ed (you can use ANY rifle in a Militia)!
It's so funny that you would mention assault rifles and semi-automatics and what not. Recently, I just got into an argument with someone on Facebook about it the other day. Someone posted this on Fb and started a comment civil war about it:https://sphotos-a.xx.fbcdn.net/hphotos-ash3/16060_551269721567248_1704859737_n.jpg
His argument was that semi-automatic weapons have no place in civilian hands because of the danger they pose to the public -- and that he knew all hunters in the state of Colorado would agree with him too, because he had several friends that hunt/own guns and they agree Semi-Automatic weapons are evil.
LONG story short (About 50 posts of rage, flaming, and in my case, complete and unflinching trolling by the actual true definition) he continued to brush off all my arguments like Mount51 said. He claimed he was not for gun control, but against semi-automatic firearms, and ignored our attempts to make him see light, until I showed him this video:The Truth About Semi-Auto Firearms
....It turns out the whole time he had NO idea that the term "Semi-Automatic" meant one round per trigger pull. He thought it meant FULLY automatic (dumping the whole magazine on one trigger pull). In fact, several others I've spoken to over the years have gradually come to associate the term "select-fire fully automatic" with "Semi-Automatic" because a semi-automatic is apparently automatic part of the time (when you switch firing modes). It's no wonder three quarters of the American people have been brainwashed into thinking AR-15's and AK-47's are so bad; the stupid pesky-lefty controlled media and their buzz words and yellow journalism have successfully brainwashed the American people into believing that tripe!
I actually watched that video several years ago when I was still relatively new to guns myself, and even then it struck me as particularly good on the subject of AR-15's and AK-47's. I've kept it to show the uninformed when I encounter them, and have so far had a near 100% success rate in making them understand the difference.