Holosun he507-gr x2 sight - Holosun HE507K-GR X2 1x Green Dot Reflex Sight

Purchased this sight to mount on a Springfield Hellcat OSP. Information for mounting a green dot on this handgun was lacking. I believed the sight needed to be RMSc format for mounting without the addition of a separate mounting plate. The information listed for this sight was vague. I did find information from people who did purchase this sight, and they suggested that a DPP mounting plate may be necessary. I did purchase the DPP plate just in case it was needed. The sight did require the DPP plate, which elevated the sight just enough to block the clear view of the factory installed sights, making them useless. The features of this sight are outstanding, but the small sight window does make finding the green dot quickly difficult. This is the first green dot sight I have mounted on a handgun, so I believe I need more time on the range to learn to pick up the sight picture faster. Zeroing the sight was very easy, and its right on the mark once zero.