Same company. Eagle Arms was one of the few off brand AR15 manufacturers in the 1980's, along with SGW and later Bushmaster.
Eagle Arms acquired the Armalite name brand, which I believe was held in the Philippines by Elisco Machine and Tool for some reason. Eagle Arms is not to be confused with the original Armalite of Fairchild Aerospace Division, where Eugene Stoner, Jim Sullivan, and Robert Fremont worked.
My first AR10 was an Eagle Arms EA-10T with 24" Chromoly steel barrel, which shot 1/3rd MOA out of the box with FGMM. Sleek black rifle it was.