I bought this to mount the new Leapers 3x9x32 Bugmaster onto my Flat Top AR Stag Arms-3, The Bugmaster is a short scope and needed to clear the backup Magpul sights. No problems - great peice and zero'd 1MOA at 200yd. However, after 300rd of 5.56mm the screws to the upper half came loose. I used Lock tight seems to fix it for another 300rd. Will see what another 1000 rds will do. Remounting scope back to rail seems to hold zero better than 2-piece mounts. Must have mount.
Pros: Solid construction
Cons: Screws between upper & lower half comes loose
This review was written in the old system and had content requirements that are different than reviews written today.