I was at the range today helping to rewire the lights to get things up to code. While we were working, John, one of the members, was trying to sight in a new AR-15. He has others, but wants to set this one up for 3-gun event shoots. It's one of the ones with the Picatinny rail that runs the length of the upper, and while it came with a scope he was trying to adjust a rear peep sight and a moveable front post. He couldn't get on the paper with it at 100 meters, so he shortened the range to 50 meters and tried again. He still couldn't get on the paper. When we stopped for coffee, I went over to where he was glaring at his AR-15 and we started chatting. I offered to spot for him though his spotting scope. He said, "I'm so fed up with this gun I could spit. YOU try shooting it and I'll spot for you." So I took his place at the bench and aimed at the 50 yard target, a standard NRA 100 meter paper bullseye target. Two rounds aimed at the bull were not on the paper. For some reason he had put a black spotter at 6 o'clock about 3 inches below the black, so I told him I was shifting my point of aim to that, and fired three rounds slow-fire that grouped in the seven-ring at 12 o'clock. There was a rip in the paper halfway between the spotter and the bottom edge of the target. I shifted point of aim again, told him, and fired four aimed rounds that you could have covered with a dollar coin in the 10-ring. Now that's a whole lot of Kentucky windage, especially for an AR-15 at 50 meters. John, Louis the Mosin Kahuna and I fiddled with the adjustable sights for 20 minutes and the three of us could not come up with a front sight position that would lower the point of aim enough to get the thing on the paper. Either John needs a new, lower front sight on the beast, or he needs a much taller rear sight to get the rifle to shoot true. I wasn't impressed with the way the aftermarket sights that came with it line up on the rail. Is it possible he was shipped a front and rear sight that are from two different sight sets? And am I right that either lowering the front sight about an inch or raising the rear sight about the same is the correct solution to his problem? Postscript: I offered John the opportunity to try Natasha, my Mosin-Nagant 91/30. He accepted, I ran him through the safety, loading with a stripper clip and bolt-closing procedures, and he let off a round. He then tried to take a second shot and nothing happened. He looked at me. "I think there's something wrong with your rifle." "John, it shoots a little better when you work the bolt, eject the old round and chamber a new one." We both laughed. He said he hadn't fired a bolt-action in years, just semi-autos and over & under shotguns. Once he got used to the bolt, he liked the rifle and was astonished when I told him what they cost these days - he's used to paying much more. But then again, he does shoot AR-15s, which cost about 10 times as much as a Mosin!