Ah yes, now we're talking. Lever guns. It's nice to see them making a comeback after years of playing second fiddle to bolt guns. They really are great guns in so many ways, as anyone who plays with them will tell you. I am suspect of anyone who would call themselves a "shooter", much less a "rifleman", who does not own and shoot at least a lever gun or two. The current Marlins are about the best of the lot, all things considered. Most are as accurate as any hunting bolt action, and often much more accurate.
Below is a photo of two of mine, an 1894 Cowboy in .45 Colt and an 1895 in .45-70. Both wear the same XS Sight systems "ghost ring" peep sights that I see in your photo. Probably the best sights going for these rifles (anyone who would scope a lever gun should probably be the first one shot with it...).
Are you sure that is a Co-Pilot? Jim West' signature guns are take down rifles, breaking down by releasing a special catch on the magazine tube, sliding it forward, then rotating the barrel/forearm/magazine tube assembly one quarter turn to disengage it from the receiver. I don't see the magazine tube catch, nor the plate tying in the rear of the magazine tube, the barrel, and the forearm. The rifle in your photo looks like an early Guide Gun, sporting the ported barrel. Still a fantastic rifle, but not quite a Co-Pilot.