I got an M17 and wanted to put a dot on it and decided to move one of my Holosun 407C's over and got a Bobro Engineering Sig 320 M17 RMR Mount With Integrated Rear Sight and paired it with a Dawson Precision Sig P Series Black Front Sights @ .375" Tall.
Installation of the mount was straightforward and had no issues, the supplied screws are too long to be used with the Holosun and I opted to use the supplied screws that came with the sight without issue, also for the 407C I did not use the sealing plate, as the battery compartment is already closed off. As best as I can tell the sealing plate and supplied screws work best with a RMR as I used the same Holosun supplied screws to mount it previously in a cut slide. The Bobro mount has a forward radius part the goes in the slot for the loaded chamber indicator and help seal that up, this was a nice add on/feature.
Installation of the Dawson front sight required fitting but it is to be noted that it does come over-sized, I fitted it with a small file and high grit sandpaper. Once installed the sights co-witness fine in the bottom of the red dot and I will put them on paper whenever I get to the range after I zero the dot.
Thumbnails for images:
Installation of the mount was straightforward and had no issues, the supplied screws are too long to be used with the Holosun and I opted to use the supplied screws that came with the sight without issue, also for the 407C I did not use the sealing plate, as the battery compartment is already closed off. As best as I can tell the sealing plate and supplied screws work best with a RMR as I used the same Holosun supplied screws to mount it previously in a cut slide. The Bobro mount has a forward radius part the goes in the slot for the loaded chamber indicator and help seal that up, this was a nice add on/feature.
Installation of the Dawson front sight required fitting but it is to be noted that it does come over-sized, I fitted it with a small file and high grit sandpaper. Once installed the sights co-witness fine in the bottom of the red dot and I will put them on paper whenever I get to the range after I zero the dot.
Thumbnails for images: