flyboy1788
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- Oct 31, 2008
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the rifle wouldnt function properly if there is a centimeter of movement. maybe a millimeter??
AR15 - Play between upper and lower
- Thread starter kostarae
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Centimeter may be a slight exaggeration.
It moves back and forth noticeably though...otherwise I would not have recognized it
I just hope it doesn't give me problems with the guns accuracy.
Otherwise, I'll have to send a new $1200 gun back to S&W and that just blows :banghead:
It moves back and forth noticeably though...otherwise I would not have recognized it
I just hope it doesn't give me problems with the guns accuracy.
Otherwise, I'll have to send a new $1200 gun back to S&W and that just blows :banghead:
jackdanson
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- Feb 14, 2008
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- 859
My mp15 is relatively loose too, doesn't seem to effect it noticebly though.
Even if it did, most people can't shoot well enough to tell the difference anyway.
Not that this is (necessarily) the case here, but I find it somewhat humorous in a lot of these cases where guys are worried about lower/upper wobble affecting their accuracy, and then go out and shoot 55 grain Wolf at 25 yards with a 4 MOA red dot sight. I guarantee, if that's the case, that the wobble is NOT the problem.
Here's why it doesn't matter.
Everything affecting where the bullet goes is on the same side of the divide. That is, everything is on the upper. The rear sight, the front sight, the barrel, the chamber...everything that impacts accuracy is in one solid piece. The only way you'll get inaccuracy from the upper/lower slop is if you can feel the slop and see the sights shifting while you are aiming. Your cheek is pressed against the stock, which is part of the lower, so play can come into the equation there, but try it a few times and be honest about whether or not it does. I've shot ARs that have some play, but I've never noticed the play while obtaining the sight picture and breaking the shot, because you're gripping the gun and pressing the upper down against the lower. You tend to notice slop when the gun is being handled or moved around, not when you're locked in for a shot.
Mike
Everything affecting where the bullet goes is on the same side of the divide. That is, everything is on the upper. The rear sight, the front sight, the barrel, the chamber...everything that impacts accuracy is in one solid piece. The only way you'll get inaccuracy from the upper/lower slop is if you can feel the slop and see the sights shifting while you are aiming. Your cheek is pressed against the stock, which is part of the lower, so play can come into the equation there, but try it a few times and be honest about whether or not it does. I've shot ARs that have some play, but I've never noticed the play while obtaining the sight picture and breaking the shot, because you're gripping the gun and pressing the upper down against the lower. You tend to notice slop when the gun is being handled or moved around, not when you're locked in for a shot.
Mike
kymarkh
Member
90% of the time it's a non-issue. I was actually glad when mine loosened up, as I did not need something to push the pins out anymore.
Howard Roark
Member
Here's why is does matter.
What happens when there is 10 to 20 thou movememnt between the halves and sometime between when the trigger is pulled and the bullet leaves the barrel the upper moves as much? Say it doesn't move one shot, the next shot it moves the full value or various amounts in between. Maybe this is part of why some say an AR can't be as accurate as a bolt gun.
It's the same as loose action screws on a bolt gun.
What happens when there is 10 to 20 thou movememnt between the halves and sometime between when the trigger is pulled and the bullet leaves the barrel the upper moves as much? Say it doesn't move one shot, the next shot it moves the full value or various amounts in between. Maybe this is part of why some say an AR can't be as accurate as a bolt gun.
It's the same as loose action screws on a bolt gun.
Tacbandit
Member
Quote by FMF:
"I guess I got lucky. My M&P15 is so tight I used to have use a pick or flat head screw driver to remove the pins. After several disassemblies it's much better but there is still no play between the upper and lower when locked together."
+1, Same here.........7x,xxx
Mine's as tight as a drum...no movement...Awesome rifle!!!
Hey kostarae, I'll bet it shoots fine...Let us know how it does at the range...Good luck...
"I guess I got lucky. My M&P15 is so tight I used to have use a pick or flat head screw driver to remove the pins. After several disassemblies it's much better but there is still no play between the upper and lower when locked together."
+1, Same here.........7x,xxx
Mine's as tight as a drum...no movement...Awesome rifle!!!
Hey kostarae, I'll bet it shoots fine...Let us know how it does at the range...Good luck...
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