A quality product - VISM Pro Series Top Mounted Deployable Front and Rear Sight

After receiving these sights, I gave them a bit of a toughness test twisting and tugging on them looking for any loose parts. Pass. They seem well made, of durable materials and look very nice as well. The only problem I found is as other customers have mentioned...a loose front sight post. Here's an easy fix for that just wrap some Teflon pipe tape around the threads (2 to 3 wraps) and reinsert sight post it will snug up nice and tight and straight. Problem solved. I've had to do that on higher end sights as well. Overall very satisfied with purchase.