Mine is my Superior Arms S-15 .223 carbine. I have a Millett DMS-1 Tactical Scope mounted on it. I just LOVE it for general fighting purposes. It lets me have the advantage of a red dot (donut) that I can use for quick shooting needs and it lets me have a variable power scope that goes from 1 to 4 power. My S-15 and scope will let me easily engage targets from 0 to over 400 meters which outdistances my SAR-1 rifle in 7.62 X 39. I can carry a lot more ammo for my S-15 than I can for any of my old M-1A rifles, AR-10 or FN/FAL rifles. For my needs, my S-15 isn't perfect but it'll do until I find something better for now.