EOTech makes the Holosight for Bushnell, on paper or contract, EOTech is suppose to sell only to the Military and LE market, and Bushnell has the civilian market. but what EOTech reseller do after they got the product is their business(in a way), so you see lots of EOTech in the civilian market. Bushnell is up in arms about the civilian leak of the EOTech, they had their guy use his own credit card to call an major national web based EOTech dealer to purchase a 551, and told the dealer he is just a civilian, not in anyway military or LE involved, he got that puppy in the mail in a week. needless to say, Bushnell is raising some hell with EOTech. EOTech is planning on laser etching their sights with LE/Military use only. what other measure to take, only time will tell. never the less, Holosight is basicially an EOTech 500 series.