Upper to Lower Fitment Issue

[Quib]

Don't file, grind, or other wise open the holes.

Assemble the upper to the lower, then take the weapon out to fire. You will see that eventually, through use, the upper will mate to the lower.

Each time out, the Take Down and Pivot Pins will gradually get easier to remove and install.

[The1andOnlyKC]

Don't file, grind, or other wise open the holes.

Assemble the upper to the lower, then take the weapon out to fire. You will see that eventually, through use, the upper will mate to the lower.

Each time out, the Take Down and Pivot Pins will gradually get easier to remove and install.

+1 I have had the same problem with several uppers and lowers. Shooting it always fixed the problem.

[ChadAmberg]

+1 I have had the same problem with several uppers and lowers. Shooting it always fixed the problem.

Heh, that's just another problem in life that's solved by just shooting it.

[USMC88-93]

Don't file, grind, or other wise open the holes.

Assemble the upper to the lower, then take the weapon out to fire. You will see that eventually, through use, the upper will mate to the lower.

Each time out, the Take Down and Pivot Pins will gradually get easier to remove and install.

+1

[BPTactical]

Don't file, grind, or other wise open the holes.

Assemble the upper to the lower, then take the weapon out to fire. You will see that eventually, through use, the upper will mate to the lower.

Each time out, the Take Down and Pivot Pins will gradually get easier to remove and install.

Never looked at it that way-good idea.

[BPTactical]

Brute force = WIN

Then you get to come see me