Very flimsy - Mission First Tactical Top Mounted Deployable Iron Sight

These are so flimsy, the plastic is so soft, it's hard to imagine them retaining accuracy. The screw to tighten the sight never gets tight, & then it just starts spinning & it's stripped. If you do decide to get these, be real carefull when mounting that screw. The plastic is so soft, you'd only want to tighten a quarter turn past the very first indication of resistance and be very careful past that.