Originally Posted by
Thetank
Alloy/steel clips over aluminum any day unless you want to replace clips every week.
Here's my setup with home-made doublers so you CAN run doubles on GR9s by using a 1" bolt holding the clips in place instead of the 1/8" they come with.

How'd you make those doublers? That looks perfect. I've got two sets of singles, and I want to convert them into doubles. I'll get longer bolts to hold in the second strap, and was thinking of just making a doubler out of zipties, or tape, or smth weak, but this is exactly what I want.