Originally Posted by jlee0812
I was reading about some fitting issues and longevity problems about them...
If everything comes together great, they'll probably last pretty well. But that's a huge "if"
. The fitting issues are real. The holes have a tendency to be a bit tight and inconsistent. And those tight holes then become loose if they split/stretch/warp/etc when hammering a pin or part in. And then you have a lousy setup.
There just aren't too many justifiable reasons to build on a polymer lower with the aluminum/alloys being so cheap and readily available at the moment. Here's a great billet lower for $125
. You can't beat that!