Quality product - Swampfox Ultimate Red Dot Mounting Screw Pack

Although this product comes with various screws in prepackage tiny baggies labeled telling you they will work with the M9A3, Kingslayer,Liberty,Justice,FN FirearmsSentinel,A,M,Sentinel A Ironsides Shield, and for the Sentinel A Ironsides Shield. It doesn't come with any paperwork to instruct you what screws to use for what other type of optic or other types of firearms. I have the Holosun SCS-320 and I want to mount it on the SpringField Echelon. What screws do I use? Why put the screws in pre labeled baggies if you don't give us instructions on what goes to what firearm or optic other then what is already labeled, and have to open each little trying to figure out what size screw goes to what. According to this box and pre package label screws, it won't work on my optic and firearm since no baggie has a label for the Holosun. Nor did the description of this product list what the box contains. So obviously I didn't use this product since according to the labeled prepackaged screws it doesn't fit any of the Holosun optics with the Echelon.I do not recommend this product unless you have what I just listed. I ended up ordering from someplace else for the Echelon using the Holosun optic screws, luckily my buddy has the M9A4 and was able to use them and purchased this product from me. Otherwise this product was going to be returned since I couldn't use it.
I do not recommend this product, Very poor product description on Optic Planet's part.