Nikon monarch red dot vsd - Nikon Monarch 1x30 Red Dot Sights VSD 1, 4, 6, 8, 10 MOA Dot

I purchased this red dod to mount on a CX4 40 S&W Carbine. Although the Carbine is light and you get some recoil with the 40 S&W its not extreme like a 44 mag or a 300+ rifle. The scope walks backwards on the mounts after 50 rounds and no matter how tight I make the mounting screws it still does. Nikon is sending me an extra set of mounting screws to try and keep it in place. I guess I expected more from a company like Nikon. A 22 mag is about the largest caliber I would recommend using this scope on.
Pros: The VSD and the clarity of the optics are great.
Cons: The mounting system on this unit is poor..it will not stand recoil

This review was written in the old system and had content requirements that are different than reviews written today.