Defective product(s)?

[itsmcgavinson]

I tried to install a B5 Systems Gripstop KeyMod on my BCM KMR, but was unsuccessful. It seems that no matter how tight I screw the Gripstop on my rail there's significant wobble. Doesn't matter which portion of the rail I try it on. Anyone have any input on this?

[GH41]

Is there a chance that the screw in either of the KeyMod nuts is bottoming out on the gas block? Is the flat on the KMR flat. I have seen some buggered up rails where the owner didn't engage the lug before tightening the accessory.

[mig1nc]

I had an old Lanco Tactical Gripstop, same thing.

Mine came with two different sets of feet/nuts. Are you sure you are using the Keymod nuts?

Sent from my Pixel 2 using Tapatalk