Over the years, many people have wanted SJC to convert their 40 cal Glocks to open pistols, so they could shoot USPSA major power factors with factory ammo. Unfortunately, the 40 cal Glock's ejection patterns have proved to be difficult to consistently tune leading to stove pipe jams if using C-mores or mounts that extend back over the ejection port. Now, S & J Customs has a manufactured cure. The SJC Glock Micro Dot Sight Mount eliminates the need to tune ejection patterns or even lower ejection ports, but still allows a dot sight to be on a non-moving platform. USPSA major power factors can be acheived with regular 40 s&w factory ammunition. There is now a more affordable method to break into the major power factor open divisions with out having to reload. We believe that the benefits of the SJC Glock Micro Dot Sight Mount along with the SJC 40 caliber 5 port Aluminum Compensator benefit the customer and the shooting sports. Just like the original SJC Glock C-more Mount, the SJC Glock Micro Dot Sight Mount fit the common speed holsters with out any modifications. Note: the large detail image is of the original prototype and the thumbnail view is of the final black product but, black on black does not show up very good in photos. SJC