The Bushnell Holo has a link on the EOTech website...My gut says same manufactureing process but EOTech branded product meets Mil-Spec Abuse tests (have you seen the shield that surrounds that thing.
I purchased a used Bushnell Holo last week and mounted it on my Cetme. Here is my "review" from another gun forum
--------------------------------------------------------------------------------
I took my ninja project to the range today. I needed to zero my "new to me" Bushnell Holosite. I used the public range in the Jefferson National Forest outside of Blacksburg, Virginia. It was a nice day, sunshine low 80's. Perfect day to use controlled chemical reactions to demonstrate several laws of physics. I was correct with my early theory that the Holo on a Tapco Swat mount was going to be a bit high. I actually was resting my chin on the stock to get a good site picture. There is now a dime sized lump at the edge of my goatee (How am I going to explain that at work on Tuesday). I was shooting from a bench unsupported. First group (5 rounds) was on paper at 25 yards. About 3 inches low and left - Group size about 1". I used 2 more groups to adjust at 25 yards. I ran the target out to 100 yards and much to my dismay the red dot almost completely obscured the black of the target. The Bushnell Holo is not a magnifying scope. What you see is what you get. My group size opened up to 6-8 inches Very acceptable for a military rifle. Final test was to remove the scope from the mounting rail...walk around. wait a few minutes, put the scope back on (being careful to put it in the same slot and justify it to the rear before tightning) and Voila- it held its zero even after being remounted. I fired a few round from a standing. The red dot felt more like iron sites than a scope. My CETME drew alot of attention. Although I only took 50 rounds of ammo (Aussie 1988) with me, but I still managed to let a few people squeeze the trigger. The smiles are incredible. I still need to do some controlled tests reguarding head position and cant (vertical lean) before I can render a full decision on the holoscope. My initial impression is that it is well made and very effective. I don't know if its worth the MSRP but I only paid $175 for mine used. Its easy to shoot. It may be better suited for something with a flat-top reciever but I think a cheek peice will rectify that.
Lessons learned today 1) Always take more ammo than you think you'll need. 2) Quit buying the cheap pistol targets and get the bigger rifle targets. 3) 10x Bino's are worthless at 100 meters without splatter targets. 4) I need to find a stock riser that will fit the T-6 sotck.