Lone_Gunman
Member
I was looking at three different Bushmaster ARs. On one, the upper/lower receiver fit was very nice, with very little movement when i tried to wobble the two. On the second, there was a little bit more, but still not too bad. On the third, I can move the upper and lower recievers enough to see about 1mm of a crack between the two. This wobbles enough to be noticeable when shouldering the rifle.
How much slop is acceptable?
Does this degrade accuracy?
Can anything be done to improve upper/lower receiver fit in an AR?
How much slop is acceptable?
Does this degrade accuracy?
Can anything be done to improve upper/lower receiver fit in an AR?