Okay, I have to change my vote to #3, weapon in hand, ammo and gear in a range bag. I had pistols on my mind when I voted #4.

I carry my rifles in a soft case. Ammo and gear in a Midway AR 15 bag.

MidwayUSA AR-15 Tactical Range Bag

I have a similar bag for pistols, ammo, and gear.

MidwayUSA Competition Range Bag System